Typo

Author: avivace

main.py

@@ -73,7 +73,7 @@ def serve_vue_app(filename):
     return send_from_directory('dist', filename)
 
 @app.route('/docs/<path:filename')
-def serve_docs_app:
+def serve_docs_app(filename):
     """
     Serve (a build of) the documentation
     'cb_docs' is the output of `npx vuepress build pages/`