Gemini API ERROR: We're sorry... but your computer or network may be sending automated queries. To protect our users, we can't process your request right now

We have started recieving an error message when trying to call Gemini API from our development environment which has previousely worked fine. Issue started to appear last week onwards. Full descripton of the error message is below:

Sorry... body { font-family: verdana, arial, sans-serif; background-color: #fff; color: #000; }
Google
Sorry...

We're sorry...

... but your computer or network may be sending automated queries. To protect our users, we can't process your request right now.

See Google Help for more information.

Google Home

This is highly affecting our application right now looking for a solution.