I am using FusionSolar API and get error when trying to access
https://sg5.fusionsolar.huawei.com/thirdData/getStationRealKpi
What should I do to solve this error?
API: https://sg5.fusionsolar.huawei.com/thirdData/getStationRealKpi
Request Method: POST
Request Body / Parameter:
{
"stationCodes": "XXXXXX"
}
HTTP Response Code: 500 Internal Server Error
Response Body:
{
"exceptionId": "framwork.remote.SystemError",
"exceptionType": "ROA_EXFRAME_EXCEPTION",
"descArgs": null,
"reasonArgs": null,
"detailArgs": null,
"adviceArgs": null
}

Additional Information:
I followed the guide on
It works last month but I start to get this error when trying to access the API few days ago.
I can access other API without problem except the getStationRealKPI:
1. I can Log in Successfully
API: https://sg5.fusionsolar.huawei.com/thirdData/login
Request Method: POST
Request Body / Parameter:
{
"userName": "XXXXXX",
"systemCode": "XXXXXX"
}
Response Body:
{
"data": null,
"success": true,
"failCode": 0,
"params": {},
"message": null
}

2. I Can Get Station list Successfully
API:https://sg5.fusionsolar.huawei.com/thirdData/getStationList
Request Method: POST
Request Body / Parameter:
{
}
Response Body:
{
"data": [
{
"aidType": XXXXX,
"buildState": XXXXX,
"capacity": XXXXX,
"combineType": XXXXX,
"linkmanPho": XXXXX,
"stationAddr": "XXXXX",
"stationCode": "XXXXX",
"stationLinkman": "XXXXXX",
"stationName": "XXXXX"
}
],
"failCode": 0,
"message": null,
"params": {
"currentTime": XXXXX
},
"success": true
}

3. I can Get KPI Station Year Successfully
API: https://sg5.fusionsolar.huawei.com/thirdData/getKpiStationYear
Request Method: POST
Request Body / Parameter:
{
"stationCodes": "XXXXXX",
"collectTime": XXXXX
}
Response Body:
{
"data": [
{
"collectTime": XXXX,
"stationCode": "XXXXXX",
"dataItemMap": {
"radiation_intensity": XXXXXX,
"installed_capacity": XXXXXX,
"use_power": XXXXXX,
"inverter_power": XXXXXX,
"reduction_total_tree": XXXXXX,
"power_profit": XXXXXX,
"theory_power": XXXXXX,
"reduction_total_coal": XXXXXX,
"perpower_ratio": XXXXXX,
"reduction_total_co2": XXXXXX,
"ongrid_power": XXXXXX,
"performance_ratio": XXXXXX
}
}
],
"failCode": 0,
"message": null,
"params": {
"currentTime": XXXXXX,
"collectTime": XXXXXX,
"stationCodes": "XXXXXX"
},
"success": true
}

I Just get error for getStationRealKPI and not in other API.
Any solution for this problem?