2.0.4.5 server appears to be broken on Synology

[JonMikelV]

This is probably not related, but do you know what version of mono you are running?

FYI: brew's mono 5.18.0.225 breaks the 11-28 beta

See: Duplicati does not start up · Issue #3572 · duplicati/duplicati · GitHub If you already have upgraded, you can probably downgrade as follows: $ brew uninstall mono Uninstalling /usr/local/Cellar/mono/5.18.0.225... (3,810 files, 415.3MB) mono 5.14.0.177 is still installed. $ brew link mono Linking /usr/local/Cellar/mono/5.14.0.177... 234 symlinks created