Microsoft Planner is not accessible Bad Request - Request Too Long HTTP Error 400. The size of the request headers is too long

I cant use our companies Office 365 Planner because of the Error:
Bad Request - Request Too Long

HTTP Error 400. The size of the request headers is too long.

Anytime i try to open https://tasks.office.com

I’m running [Version 1.0.0 Chromium: 78.0.3904.97 on Windows 10

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