How to test sending custom data from this app

[ReactRaylogic]

Hey all, I wanted to send custom data to the esp. I have Idf 4.44 sample example provision application. I am able to connect send to the device, send ssid and password to it but not the custom data. i am using the endpoint 'custom-data' but i am getting the error as

E (15516) security1: Key mismatch. Close connection E (15516) security1: Session setup error -1 D (15526) protocomm: SEC_EP Req handler returned -1