Problem description:
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time… Only Google Chrome and other Chromium-based browsers implemented
Expect-CT, and Chromium has deprecated the header from version 107, because Chromium now enforces CT by default. See the Chrome Platform Status update.(Expect-CT - HTTP | MDN)
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Steps to reproduce:
Create repl with web output. (HTML; Flask, etc.)