question

CloudScriptAPIRequestError is one of ScriptExecutionError which indicates "The script called a PlayFab API, which returned an error.".

From the Errors report, you can find related error information by hovering over it like

Then you can know this error is occurred in getothersinv function and it is occurred because in this function, you called a PlayFab API and this API call returned an error. You might add try/catch in this function to handle the error like in this asnwer.

And if you've generated PlayStream event for this function. You can try to find failed event and check the raw JSON of the event. The content might like the following, in the content you can find more details about the error.

"CloudScriptExecutionResult": {
    "FunctionName": "GetOthersInv",
    "Revision": 4,
    "FunctionResult": null,
    "FunctionResultTooLarge": null,
    "Logs": [
        {
            "Level": "Error",
            "Message": "PlayFab API request error",
            "Data": {
                "api": "/Server/GetUserInventory",
                "request": {
                    "PlayFabId": "fake"
                },
                "result": null,
                "apiError": {
                    "code": 400,
                    "status": "BadRequest",
                    "error": "InvalidParams",
                    "errorCode": 1000,
                    "errorMessage": "Invalid input parameters",
                    "errorHash": null,
                    "errorDetails": {
                        "PlayFabId": [
                            "must be a hex-encoded number"
                        ]
                    }
                }
            }
        }
    ],
    "LogsTooLarge": null,
    "ExecutionTimeSeconds": 0.015547799999999998,
    "ProcessorTimeSeconds": 0,
    "MemoryConsumedBytes": 58408,
    "APIRequestsIssued": 1,
    "HttpRequestsIssued": 0,
    "Error": {
        "Error": "CloudScriptAPIRequestError",
        "Message": "The script called a PlayFab API, which returned an error. See the Error logs for details.",
        "StackTrace": "Error\n    at handlers.GetOthersInv (E4EB-main.js:295:28)"
    }
},