Hi,
please see here Login
The latest version of Plack changed some mime types which causes RT to fail starting up when using a Plack version > 1.0051
As the bug tracker is normally filled with spam, I’m also posting it here in the hope someone notices.
PS: Please enable github issues for rt, this would be the best place to report bugs
Adding some details, by default, RT instructs tools installing perl modules to get the latest version, so if you try to install RT after 2026-04-27, you will get the new version of Plack and RT won’t run. You can install the last compatible version of Plack by specifying the version number: cpanm Plack@1.0051
Updates that are compatible with new and old versions of Plack will be in the next releases of RT.