On Fedora 34, I have the Seafile client installed following the official instructions:
> sudo dnf list seafile --showduplicates
Installed Packages
seafile.x86_64 8.0.3-1 @seafile
The application fails to start because of an incompatibility with libevent:
> seafile-applet
seafile-applet: error while loading shared libraries: libevent-2.1.so.6: cannot open shared object file: No such file or directory
Could you provide an updated build of the client, please?