Error message about REST API

  • I still got the error message：

    register_rest_route was called incorrectly. The REST API route definition for alo-easymail/v1/trkpxl is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. Please see Debugging in WordPress for more information. (This message was added in version 5.5.0.)

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