Make exception reporting best effort.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index eae0df6ec62d5f51f0a5bc3b1330c03736c02854..46f196107523c3b14bf9e7a290d37eeafa5b12e1 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -781,7 +781,13 @@ class AnalysisServer {
             .toNotification());
 
     // send to crash reporting
-    options.crashReportSender?.sendReport(exception, stackTrace: stackTrace);
+    if (options.crashReportSender != null) {
+      // Catch and ignore any exceptions when reporting exceptions (network
+      // errors or other).
+      options.crashReportSender
+          .sendReport(exception, stackTrace: stackTrace)
+          .catchError((_) {});
+    }
 
     // remember the last few exceptions
     if (exception is CaughtException) {