Manual:$wgPropagateErrors

Debug: $wgPropagateErrors
If true, the MediaWiki error handler passes errors/warnings to the default error handler after logging them.
Introduced in version:1.31.0 (Gerrit change 338911; git #87a8c1de)
Removed in version:still in use
Allowed values:(boolean)
Default value:true

Details edit

If true, the MediaWiki error handler passes errors/warnings to the default error handler after logging them. The setting is ignored when the track_errors php.ini flag is true.