Deliver index.html per default

app.py

@@ -2,6 +2,10 @@ from flask import Flask, send_from_directory
 
 app = Flask(__name__)
 
+@app.route("/")
+def svelte_index():
+    return send_from_directory("webapp/build", "index.html")
+
 @app.route("/<path:path>")
 def svelte_client(path):
     return send_from_directory("webapp/build/", path)