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Æ"øÆïK'º½Ø§ÙÓáÐÅQ1L¶Very interesting. Thanks for reporting. The request is being flagged as malicious and blocked by Cloudflare. It uses the same error code as not being logged in which confuses the FE.
https://whatsonchain.com/tx/0877c697cb1014f7c1eda10d6989550b7b6db17ff0aebd84f331ab5c9315a8c3