Cannot download issue-attachments that contains one or more “+” (Plus Sign) characters
To recreate it - just create an Issue, create a text file with any name containing "+" (plus sign) e.g. "Test+File.txt" and attach that file to the issue and submit.
After that open that issue, and try to download that file. It will show "404 - File or directory not found." error.
Then edit the attachments - rename the file to "Test_File.txt", and then try downloading it - it will get downloaded without any issues.
Updated by Rahul Patil about 4 years ago
Redmine version 4.0.4.stable
Ruby version 2.5.5-p157 (2019-03-15) [x64-mingw32]
Rails version 5.2.3
Database adapter Mysql2
Mailer queue ActiveJob::QueueAdapters::AsyncAdapter
Mailer delivery smtp
no plugin installed