PUT Leads return INTERNAL_ERROR on API v2

PUT Leads return INTERNAL_ERROR on API v2

Hello,

When I send request "PUT" https://www.zohoapis.com/crm/v2/Leads/{my_record_id}, API returns me the next response:
{
    "code""INTERNAL_ERROR",
    "details": {},
    "message""Internal Server Error",
    "status""error"
}

Headers: Content-Type:application/json Authorization:{my_Auth_Key}

Request Body: { "data": [ { "First_Name": "FirstName", "Last_Name": "LastName", "Email": "abc@test.com" } ] }

Please let me know how to fixed the problem.