Fix api/v1/template API for Template Resolution

{
    "code": 409,
    "status": "GENERIC_FAILURE",
    "timestamp": "2022-06-17T14:29:49.888Z",
    "message": "query did not return a unique result: 2; nested exception is javax.persistence.NonUniqueResultException: query did not return a unique result: 2",
    "debugMessage": "",
    "logLevel": "ERROR",
    "subErrors": []
}