Share & Save link: Bad Request Error

[SJGriffinArts]

A fellow shop owner posted his share and save link on FB. When I clicked on it, I got:

Bad Request

Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.

So yesterday 11/24 I signed up for S&S in my shop to test the link out. Initially the link worked. But today I'm getting the same error when I click the link I posted on FB. Anyone else having this issue?

[SJGriffinArts]

I should add, I'm on a desk top Mac, Ventura 13.6.1, using Safari 17.1

[BagmakerSupply]

@SJGriffinArts: It is unlikely to be directly related to Share And Save. One of the most common causes of "size of a request header field exceeds server limit" is too many cookies being sent in the header - and Etsy leaves lots of them. The problem may be intermittent as cookies are deleted or expire. This may be even more noticeable if you log in and out of multiple shops using the same browser.

According to other posts in this forum, another common reason for the "Bad Request" error seems to be that some browser extensions cause issues - Sale Samurai is often mentioned as the culprit.