MODX 2.8.4 error_log messages Language string not found


I have several DEBUG messages in error_log like this:

Language string not found: "System default"

How could I solve this?

thank you in advance


The code tries to find the lexicon string with the key System default, but can’t find it.

It’s probably not core MODX, that tries to load this lexicon string. Maybe it’s from an extra or from a lexicon tag ([[%...]]) in one of your resources.

Also maybe change the system setting log_level. It’s rarely useful to log all the debug messages.