Hi,
I have datasources script in python which runs fine and also I can see the element also got created, but when I click on that element it shows that no visible data pages available.
in http://localhost:34567/swagger/index.html when test on api/parameters I see that I get "Sequence contains no element" what can be the reason?
Hi Apurva,
I’m not sure if this will help with your debugging, but the error "Sequence contains no element" typically occurs when LINQ methods like .First(), .Single(), etc., are used on a collection that is either empty or null. These methods assume the collection contains at least one element and will throw this error if none are found.
To avoid this, it’s better to use .FirstOrDefault() or .SingleOrDefault(). These methods return null when no elements are present, allowing you to handle such cases more gracefully. After retrieving the result, you can add a check to see if it’s null or empty before proceeding with the logic.
Using this approach can help ensure your code is more robust and avoids unexpected exceptions when dealing with empty collections.
Hi,
In API on swagger I pass this type of JSON and still get Sequence contains no element cant figure out what issue
{ "components": [
{
"AlarmId": 3614501,
"ElementId": 290,
"ElementName": "Sky-News-TXCore",
"Severity": "Critical",
"ParameterDescription": "Memory Usage (Servers Info) sky-news-pi-ams",
"ParameterValue": "70.000000",
"StartTime": "/Date(1736263098000)/",
"ServiceInvolved": [
"TX Core"
],
"ClusterName": "Contribution"
},
{
"AlarmId": 3614481,
"ElementId": 312,
"ElementName": "MUN-X20-FRM-003_1_2_4_19",
"Severity": "Critical",
"ParameterDescription": "Signal Loss (Decoder Services) 3/Auto First Service [239.202.1.4:5000] 3G-1BD",
"ParameterValue": "BLACK_FRAME",
"StartTime": "/Date(1736262135000)/",
"ServiceInvolved": [
],
"ClusterName": "Contribution"
}
]
}