Unable to run a simple rb file and getting an error trying to run debugger

[Willem van Ketwich]

Hi there,
I am using vim 8.0 on MacOS and am getting the following error when running any debugger command:

Error detected while processing function 288[25]..275[5]..<SNR>105_send_message_to_debugger:
line   11:
Errno::ENOENT: No such file or directory - connect(2) for /tmp/vBLAVhp/10
Press ENTER or type command to continue

Any help would be greatly appreciated.

Cheers,