Translate Exception error messages

[kelemeng]

In many case when an exception is thrown there is a user-readable message, which is translated to English, but not all. Many of the translated ones are also marked for localization with the L.m() call.
Proposal is:
(1) Translate all German strings to English
(2) Mark them for localization as needed.
Current list can be queried with
git grep "throw new .*Exception" | grep -v "L.m"
(this gives now 191 hits, not all of them relevant though)

[r1shhh1]

Hello!
I came across this issue and wanted to work on this. I would really appreciate it if you assign me this issue .

[ketan3108]

Can you please provide any particular file location where you are facing this issue . Hoping to contribute in this .