Asking MCP a simple query on LAW, and I got error in the API request - Fields doesn't exists

Hi,
I tried to use Azure MCP to summerize Alerts I got on Log Analytics Workspace,
It creates the wrong Json to ask (It retries 10 times, and give up)
The last API call is:

{
"auth-method": "credential",
"hours": "240",
"query": "AzureDiagnostics | where Resource contains "yada-yada-prod" and Category == "Alert" and TimeGenerated > ago(10d) | project TimeGenerated, Resource, ResourceGroup, AlertName_s, Severity_s, MonitorCondition_s, Description_s",
"resource-group": "Yada-Yada-Yada-law",
"subscription": "Yada-Yada-Sub",
"table-name": "AzureDiagnostics",
"workspace": "Yada-Yada-Yada-law"
}

Not sure why it creates the query like that, when it suppose to create the query,

The problematic properties are

AlertName_s, Severity_s, MonitorCondition_s, Description_s

how can I make him understand in order to create a valid request