I have this problem when i check API with swagger. Can somebody tell me why cause this issue and how can i fix this issue: enter image description here

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    Jul 8, 2022 at 2:23

1 Answer 1


This is means that you have incorrect API Schema by request /rest/all/schema?services=all.

Some 3rd party extension or your custom code cause the error.

For debug I recommend to switch environment into developer mode

php bin/magento deploy:mode:set developer

and see response of /rest/all/schema?services=all

  • Thank for your help, i really want to upvote this answer but i do not have enough reputation
    – KAITO_3SS
    Jul 11, 2022 at 1:40

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