The Apache error log (error.log) records any Apache-level issues, which are usually general infrastructure issues, including capacity problems, .htaccess problems, and missing files.
The following line is a representative example of the data written into your website’s Apache per-site error log:
Apache error logs
The Apache error log (error.log) records any Apache-level issues, which are usually general infrastructure issues, including capacity problems, .htaccess problems, and missing files.