We have implemented custom error handling in Power Bi component in our angular app from here Docs .Something like this:

this.report.on('error', (event: any) => {               
    const error = event.detail;               
    console.log("event",event)               
    //If error is not Fatal log the error and continue              
    if (error.level !== pbi.models.TraceType.Fatal) {                 
        console.error(error);                  
        if (this.retryCount < this.maxRetryCount) {                   
        this.retryCount  ;                   
        this.isReady = false;                   
        setTimeout(() => {                     
        this.loadReport(ReportDashboardConfig);                   }, 
        this.retryCount * 500);                 } 
        else {                   
        this.isError = true;                 
    }                
} 

But when we encounter error we don't receive any level property in our detail property in event object. This is the event.detail object:

{     "message": "QueryUserError",     "detailedMessage": "Can't display the visual.. Could not render a report visual titled: undefined",     "technicalDetails": {         "requestId": "Some value here"     } 

How to get the level of the error.