Upload attachment button doesn't seem to do anything

[executed]

Related reproducible bug:

Unable to add Task attachments

When I open a task and try to add an attachment via UI, I get an error both saying: Error Can’t add files here When I try to add the same file again, I get no error message, but nothing gets added. A new file trigger the same errors again. Docker version: Version: v0.24.1-796-e9444159c5 No errors in the docker container log nor the browser console. Reproduces the issue at 21:55 CET in the Demo account.