URL: https://mail.google.com/

Browser / Version: Firefox 116.0
Operating System: Windows 10
Tested Another Browser: Yes Chrome

Problem type: Desktop site instead of mobile site
Description: Google calendar didn't load successfully
Steps to Reproduce:
I logged into gmail, and then clicked the "google calendar" icon on the sidebar panel on the right hand side. Google calendar didn't load successfully. It was blank. Other apps, Keep or Tasks, worked as expected.

Several STRs.
STR1:

1. log into gmail
2. click google calendar icon on the sidebar panel on the right hand side
   Actual result: it's blank.

STR2: (if STR1 worked)

1. Refresh gmail page, which has the google calendar menu open on the right hand side
2. The calendar seemed to start loading. But it didn't load successfully in the end. It was blank.

I started to have this issue two days ago. I can reproduce the issue on Firefox Nightly 113, Firefox release 114 and Firefox Nightly 116.

View the screenshot

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