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

I am totally up to date, and keep getting this error message from safari for sites that I have visited many times before. I have tried the same for chrome, and it works perfectly. Please help.

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

iMac, macOS High Sierra (10.13.1), Safari problem

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