I had been running bitcoin core qt for a few months fine and then on rebooting my mac and opening the application the following prompt popped up
Error: Cannot parse configuration file: specified data directory ""/Users/username/Library/Application Support/Bitcoin/"" does not exist..
I'm a long way from being technically competent but I'm 99% sure the data directory does exist.
Any advice on what else this could be? or what I'm doing wrong?