scel stuck in non-functional state if sclang_conf file has 'excludeDefaultPaths: true'

[SimonDeplat]

I have an alternate sclang_conf.yaml file for development purposes.

Tried to use it in scel, and got stuck, similar to #57, at *** Welcome to SuperCollider 3.13.0. *** For help type C-c C-y.. No way to evaluate code.

This config file works perfectly in ScIDE.

Since default config file was working fine, I tried to mimic it, and apparently, setting excludeDefaultPaths: false does the trick.