Cant start server: Unable to get local issuer certificate

[RDJRaymo]

I am unable to start the web-server as it simply throws up the error "Unable to get local issuer certificate". It does not generate any logs or anything for me to be able to determine what certificate it is trying to retrieve, or where (if?) I can manually do anything with the required certificate in order to help it along.

I am behind a corporate proxy, which I believe is part of the issue, but I also believe I have set my proxy URL correctly; though I also get the same issue when I put no proxy URL at all. Would that be confirmation that perhaps my proxy URL is wrong? Other possible proxy URLs / variations I have tried just give me 400 / 404 errors, so I'm quite confident that it is correct as is.

My company also has their own custom CA which is used for some things as well.

I'm 60% sure that I'm just being an idiot, but is there anything I can do to at least get some logging out of this to find out what is happening?

[RDJRaymo]

Managed to make it work by making the API Token Resolver allow unauthorised (since it couldn't recognise our corporate proxy's CA), so I'm assuming that if I got a hold of the pem chain for this that would also work.