Table mysql/innodb_index_stats has length mismatch in the column name table_name. Please run mysql_upgrade
Maybe this information is useful.
https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-23.html

Note
This release includes a change to the innodb_index_stats and innodb_table_stats system tables. When upgrading to this release, be sure to run mysql_upgrade in order to include these changes.