How can you locate the .po file used for translation of a page?

Turns out the .po file I was editing was not the correct one for my plugin. i’ve reconstructed the .po and .mo with the .pot file inside the plugin, and now translations works just fine.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)