Exception - Google Cloud vision OCR

When Google Cloud vision OCR is used an exception is thrown. Can someone help in resolving this issue.
Thanks in advance.

Can you post the error you are getting @preeharris? Unable to find out the error in the screenshot attached

@HareeshMR hope these screenshots give you better information

It states that the API key is not valid. Can you check if the key you are passing is valid, I mean correct @preeharris

Ok @HareeshMR