Change language of the web interface without compiling the source code

Hello every one, I use Chirpstack for a project, and I need to change the language to french. I wanted to juste change the css and js files of the web interface but I couldn’t find these files in the system where I have installed Chirpstack (version3 without docker, on Ubuntu). Is there a way to change these files without needing to change in the source code and build it? as I have a limited time.
Thank you for your help

Sorry, but this is not possible.

no problem thank you