Issue Error: The required response header "uuid" was not found in the transaction

I have an API that has uuid as the header and three parameters as query. I used Postman to test and even though my response is successful with return code 200. I get this issue error: The required response header “uuid” was not found in the transaction
Query Params has the three parameters
Header has other parameters and also the uuid.
Not sure why I get this issue error.

In my swagger, I have something like this:
“responses”: {
“200”: {
“description”: “Successful Request”,
“headers”: {
“uuid”: {
“$ref”: “#/components/headers/uuid”
}
},
“content”: {
“application/json”: {
“schema”: {
“$ref”: “#/components/schemas/SuccessfulResponse”
}
}
}
},