Translation key not displayed in OJS 3.0.2

I upgraded from OJS to OJS I realized that translation of plugin recommendbyAuthor is not displayed although locale exists in proper place.
I use Bootstrap theme for OJS 3.0.2.

See attach.

Hi @vvucic,

Have you validated that locale file?

Alec Smecher
Public Knowledge Project Team

I have done upgrade again and realized that it works now. Probably something was not completed properly during previous upgrade. It works OK now.