Unable to Translate just two Error messages using LOCO

Error: The password field is empty.

Unknown username. Check again or try your email address.

There are these two error messages I can’t seem to Translate. Where are these Strings located at?

I even tried manually adding these into the .pot file, but it is still the same.

I have translated almost all except these two, by either changing the language file or directly changing the .pot file.

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