fix query over live error - getQueryData should wait for centrifuge to initialize (#43880)

public/app/features/live/centrifuge/service.ts

@@ -209,6 +209,9 @@ export class CentrifugeService implements CentrifugeSrv {
    * Since the initial request and subscription are on the same socket, this will support HA setups
    */
   getQueryData: CentrifugeSrv['getQueryData'] = async (options) => {
+    if (!this.centrifuge.isConnected()) {
+      await this.connectionBlocker;
+    }
     return this.centrifuge.namedRPC('grafana.query', options.body);
   };
 

public/app/features/query/state/runRequest.ts

@@ -143,7 +143,8 @@ export function runRequest(
     }),
     // handle errors
     catchError((err) => {
-      console.error('runRequest.catchError', err);
+      const errLog = typeof err === 'string' ? err : JSON.stringify(err);
+      console.error('runRequest.catchError', errLog);
       return of({
         ...state.panelData,
         state: LoadingState.Error,