Safari gives error 500 when opening Google Search page
About a month ago, Safari started giving me an Error 500 whenever I opened a new browser window. The problem is that Google.com is my default "HomePage". I have tried changing the address to https. I have tried changing the default page to another page and then back again. I have tried clearing cookies and cache. This problem does not exist in FireFox or Chrome.
I can go to Google Apps, drive, mail, etc. But not back to http://Google.com. If I type in search request into the bar, that works fine. Google gives me the results as expected.
MacBook Pro 13″, macOS 12.0