API 500 Error

API 500 Error

Hello amazing ZOHO Projects Community,

I get this message. How can we solve this? 

{
    "error": {
        "status_code": "500",
        "method": "GET",
        "instance": "/api/v3/portal/2010147XXXX/projects/2679160000003XXXX/timesheet",
        "title": "INTERNAL_SERVER_ERROR",
        "error_type": "OPERATIONAL_VALIDATION_ERROR",
        "details": [
            {
                "message": "Internal server error. Please contact support@eu.zohoprojects.com for further details.",
                "message_key": "zp.general.error"
            }
        ]
    }
}

This is the request:

--header 'Authorization: Zoho-oauthtoken private-taóej' \
--header 'Cookie: CROSSCDNCOUNTRY=EG; JSESSIONID=F5F4128C326A41E174F17733C1F8BA4B; ZPCROSSCDNID=session_id; _zcsr_tmp=TMP; zalb_private; zpct=private'

Best wishes

Niels