I followed this article to update and change a language pack: https://confluence.atlassian.com/jirakb/install-a-custom-language-pack-for-jira-server-295305642.html
I changed the .jar ending to .zip and then unpacked it. After that I opened a specific property file, changed some values and then zipped the folder back and changed the ending to .jar again.
When I upload the language pack via UPM:
jira throws this error:
Could not install the file jira-core-language-pack-de_DE-8.0.0.v20190201000500.jar. Check that the file is valid.
I also checked that I downloaded the correct version of the language pack, by checking the versions of the existing language packs in my jira instance.
So, what am I doing wrong?
Or is there another way to do it?
Thanks in advance!
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