Prevent crash when loading workspace with deleted folder

Fixes #3356

Signed-off-by: David Thompson <davthomp@redhat.com>

Author: datho7561

src/serverlessFunction/functionModel.ts

@@ -123,13 +123,18 @@ export class ServerlessFunctionModel implements Disposable {
     private addWatchers() {
         if (workspace.workspaceFolders) {
             for (const workspaceFolder of workspace.workspaceFolders) {
-                this.watchers.push(
-                    fs.watch(workspaceFolder.uri.fsPath, (_event, filename) => {
-                        if (filename === 'func.yaml') {
-                            this.view.refresh();
-                        }
-                    }),
-                );
+                try {
+                    fs.accessSync(workspaceFolder.uri.fsPath);
+                    this.watchers.push(
+                        fs.watch(workspaceFolder.uri.fsPath, (_event, filename) => {
+                            if (filename === 'func.yaml') {
+                                this.view.refresh();
+                            }
+                        }),
+                    );
+                } catch (e) {
+                    // do not watch non-existent folder
+                }
             }
         }
     }