Hello @hanwin
Thank you for the support topic, can you please confirm that you have enabled REST API and no plugin is blocking it, Also please make sure that your site does not have any errors in a REST response.
Additionally, please share your site URL, site info, and PHP error log using this form so we can investigate the issue further.
@hanwin Checking in here – are you still seeing this error message? If so, if you can share your site URL, site info, and PHP error log using this form we’d be happy to help troubleshoot.
@hanwin As we didn’t receive a response I’ll mark this as resolved. Feel free to open a new support topic if you require any further assistance.