403 wp-json Api authentication error invalid signature

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Assisted by: Bruno Kos.

Author	Posts
October 1, 2025 at 1:53 pm #17449104
gustavoD-7	Background of the issue: I am trying to complete step 4 of AI TRANSLATION using the WPML plugin. The issue can be seen on this page: hidden link. Symptoms: I encountered a 403 forbidden error with the message 'Api authentication error invalid signature'. The console shows a reload page with the error: {"errors":[{"status":403,"title":"Api authentication error invalid signature","detail":"The signature is invalid"}],"success":false,"error":{"class":"ApiAuthenticationError::InvalidSignature","message":"The signature is invalid","backtrace":null,"cause":null},"status":403,"explanation":null}. Questions: Why am I receiving an 'Api authentication error invalid signature' when trying to complete step 4 of AI TRANSLATION? How can I resolve the 403 forbidden error to proceed to the next step?

Author

Posts

October 1, 2025 at 1:53 pm #17449104

Background of the issue:
I am trying to complete step 4 of AI TRANSLATION using the WPML plugin. The issue can be seen on this page: hidden link.

Symptoms:
I encountered a 403 forbidden error with the message 'Api authentication error invalid signature'. The console shows a reload page with the error: {"errors":[{"status":403,"title":"Api authentication error invalid signature","detail":"The signature is invalid"}],"success":false,"error":{"class":"ApiAuthenticationError::InvalidSignature","message":"The signature is invalid","backtrace":null,"cause":null},"status":403,"explanation":null}.

Questions:
Why am I receiving an 'Api authentication error invalid signature' when trying to complete step 4 of AI TRANSLATION?
How can I resolve the 403 forbidden error to proceed to the next step?

The topic ‘[Closed] 403 wp-json Api authentication error invalid signature’ is closed to new replies.