@@ -69,16 +69,25 @@ public override async Task<CompletionList> Handle(CompletionParams request, Canc
 int cursorColumn = request.Position.Character + 1;
 
 ScriptFile scriptFile = _workspaceService.GetFile(request.TextDocument.Uri);
-(bool isIncomplete, IReadOnlyList<CompletionItem> completionResults) = await GetCompletionsInFileAsync(
-scriptFile,
-cursorLine,
-cursorColumn,
-cancellationToken).ConfigureAwait(false);
-
-// Treat completions trigged by space as incomplete so that `gci `
-// and then typing `-` doesn't just filter the list of parameter values
-// (typically files) returned by the space completion
-return new CompletionList(completionResults, isIncomplete || request?.Context?.TriggerCharacter is " ");
+try
+{
+(bool isIncomplete, IReadOnlyList<CompletionItem> completionResults) = await GetCompletionsInFileAsync(
+scriptFile,
+cursorLine,
+cursorColumn,
+cancellationToken).ConfigureAwait(false);
+
+// Treat completions triggered by space as incomplete so that `gci `
+// and then typing `-` doesn't just filter the list of parameter values
+// (typically files) returned by the space completion
+return new CompletionList(completionResults, isIncomplete || request?.Context?.TriggerCharacter is " ");
+}
+// We can't do anything about completions failing.
+catch (Exception e)
+{
+_logger.LogWarning(e, "Exception occurred while running handling completion request");
+return new CompletionList(isIncomplete: true);
+}
 }
 
 // Handler for "completionItem/resolve". In VSCode this is fired when a completion item is highlighted in the completion list.