Unable to spawn a new child process -- Webkit2gtk directory not found

Hello,

I am trying to run an AppImage and get the following error:

(pyfa.py:3326): ERROR **: 12:03:47.282: Unable to spawn a new child process: Failed to spawn child process “/usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/WebKitNetworkProcess” (No such file or directory)

What does this mean? I thought I was missing the webkit package but I still get the same error after installing webkit2gtk-4.1 and rebooting.