innodb_log_file_size not upating even after changing my.cnf
The buffer_pool_size seems rather low.  How much RAM do you have?

innodb_log_file_size can be virtually any size.  Make it as big as innodb_buffer_pool_size.

But, and this may be the problem, the setting must be in a section started by

[mysqld]


See also: https://www.percona.com/blog/2016/05/31/what-is-a-big-innodb_log_file_size/