title: XAMPP- MYSQL shutdown unexpectedly
body: <p>I am facing this problem from today morning .
      <pre><br>
      11:30:25 AM  [mysql]    Error: MySQL shutdown unexpectedly.
      11:30:25 AM  [mysql]    This may be due to a blocked port, missing dependencies, 
      11:30:25 AM  [mysql]    improper privileges, a crash, or a shutdown by another method.
      11:30:25 AM  [mysql]    Press the Logs button to view error logs and check
      11:30:25 AM  [mysql]    the Windows Event Viewer for more clues
      11:30:25 AM  [mysql]    If you need more help, copy and post this
      11:30:25 AM  [mysql]    entire log window on the forums</p>
  
  <p></pre>    </p>
  
  <p>following is error log</p>
  
  <pre>
  
      [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
      2019-12-04 10:57:26 0 [Note] InnoDB: Uses event mutexes
      2019-12-04 10:57:26 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
      2019-12-04 10:57:26 0 [Note] InnoDB: Number of pools: 1
      2019-12-04 10:57:26 0 [Note] InnoDB: Using SSE2 crc32 instructions
      2019-12-04 10:57:26 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
      2019-12-04 10:57:26 0 [Note] InnoDB: Completed initialization of buffer pool
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\mysql\gtid_slave_pos.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``mysql`.`gtid_slave_pos``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `mysql`.`gtid_slave_pos` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\mysql\innodb_index_stats.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``mysql`.`innodb_index_stats``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `mysql`.`innodb_index_stats` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\mysql\innodb_table_stats.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``mysql`.`innodb_table_stats``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `mysql`.`innodb_table_stats` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\mysql\transaction_registry.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``mysql`.`transaction_registry``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `mysql`.`transaction_registry` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__bookmark.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__bookmark``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__bookmark` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__central_columns.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__central_columns``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__central_columns` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__column_info.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__column_info``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__column_info` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__designer_settings.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__designer_settings``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__designer_settings` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__export_templates.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__export_templates``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__export_templates` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__favorite.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__favorite``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__favorite` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__history.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__history``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__history` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__navigationhiding.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__navigationhiding``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__navigationhiding` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__pdf_pages.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__pdf_pages``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__pdf_pages` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__recent.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__recent``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__recent` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__relation.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__relation``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__relation` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__savedsearches.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__savedsearches``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__savedsearches` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__table_coords.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__table_coords``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__table_coords` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__table_info.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__table_info``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__table_info` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__table_uiprefs.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__table_uiprefs``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__table_uiprefs` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__tracking.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__tracking``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__tracking` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__userconfig.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__userconfig``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__userconfig` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__usergroups.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__usergroups``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__usergroups` because it could not be opened.
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 2 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\phpmyadmin\pma__users.ibd' OS error: 71
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
      2019-12-04 10:57:26 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
      2019-12-04 10:57:26 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``phpmyadmin`.`pma__users``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
      2019-12-04 10:57:26 0 [Warning] InnoDB: Ignoring tablespace for `phpmyadmin`.`pma__users` because it could not be opened.
      2019-12-04 10:57:26 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
      2019-12-04 10:57:26 0 [Note] InnoDB: Creating shared tablespace for temporary tables
      2019-12-04 10:57:26 0 [Note] InnoDB: Setting file 'C:\xampp\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
      2019-12-04 10:57:26 0 [Note] InnoDB: File 'C:\xampp\mysql\data\ibtmp1' size is now 12 MB.
      2019-12-04 10:57:26 0 [Note] InnoDB: Waiting for purge to start
      2019-12-04 10:57:26 0 [Note] InnoDB: 10.4.8 started; log sequence number 7246905; transaction id 25896
      2019-12-04 10:57:26 0 [Note] InnoDB: Loading buffer pool(s) from C:\xampp\mysql\data\ib_buffer_pool
      2019-12-04 10:57:26 0 [Note] Plugin 'FEEDBACK' is disabled.
      2019-12-04 10:57:26 0 [ERROR] Could not open mysql.plugin table. Some plugins may be not loaded
      2019-12-04 10:57:26 0 [Note] InnoDB: Buffer pool(s) load completed at 191204 10:57:26
      2019-12-04 10:57:26 0 [ERROR] Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist
      2019-12-04 10:57:26 0 [Note] Server socket created on IP: '::'.
  
  </pre>
  
  <p>I tried deleting ibdata1 file. and also replacing  mysql/backup folder files into data folder. But those changes were leading to other errors. so I revert it.
  It was giving 'Table doesn't exist in engine' error for many of my tables</p>
  
  <p>Please help out.</p>