Theme Check plugin translation error

Hey there!

I’m posting this question here because i haven’t found a proper solution for the following issue: when i check my theme with the ThemeForest-Check supplement for the Theme Check plugin, it throws this error:

WARNING: Found a translation function that is missing a text-domain. Function __, with the arguments

The question may sounds a bit dummy, but how should i search my theme files globally for this empty function without any arguments? Any suggestions?

Thanks, Erik