Why do I keep getting the error idpiframe_initialization_failed with google calendar api?

Question

I keep getting the error:

I have tried everything the other posts have done, but I keep getting the same error, It is so annoying!!!

I tried

1. Re-creating api key
2. creating new project
3. Whitelisting my website

my code is: Can someone please help me solve this issue??

Answer 1

you need to enable third party cookies of your browser

Answer 2

This caught me as well. Try disabling your browser cache in Chrome.