[8.4](backport #1854) Add error detail to catch-all HTTP response

[mergify]

This is an automatic backport of pull request #1854 done by Mergify.

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[elasticmachine]

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• Start Time: 2022-09-15T18:18:53.532+0000

• Duration: 11 min 35 sec

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Test	Results
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Passed	304
Skipped	1
Total	305

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[mergify]

This pull request has not been merged yet. Could you please review and merge it @joshdover? 🙏