Hello @makeworld-the-better-one
I'm using amfora 1.4 for linux on a Windows machine using WSL.

Obviously, in this setup there is no detectable GUI nor browser, so when trying to open an http link it fails.

To overcome this, I manually set the http setting value from default to /mnt/c/Program Files/Mozilla Firefox/firefox.exe.

Amfora then prompt me with:
Error executing custom browser command: fork/exec /mnt/c/Program: no such file or directory

It appears that the spaces in the path are not properly escaped.

So I chanced the setting to /mnt/c/Program\ Files/Mozilla\ Firefox/firefox.exe but again amfora prompt the error Error executing custom browser command: fork/exec /mnt/c/ProgramFiles/MozillaFirefox/firefox.exe: no such file or directory. which shows that the spaces have been removed.