Tried everything on Ubuntu 24.04. Yes fuse 2 is installed. This is what I get when tryinf to run it
brian@SER5:~/Downloads$ ./Manager-linux-x64.AppImage
QSocketNotifier: Can only be used with threads started with QThread
AppImageLauncher error: appimage_shall_not_be_integrated() failed (returned -1)
AppImageLauncher error: appimage_is_terminal_app() failed (returned -1)
(AppImageLauncher:11415): GLib-CRITICAL **: 14:15:07.437: g_file_test: assertion ‘filename != NULL’ failed
gtk-update-icon-cache: Cache file created successfully.
Directory ‘/home/brian/.local/share/mime/packages’ does not exist!
execv error: No such file or directory