Update launch.py

launch.py

@@ -1,2 +1,6 @@
-import subprocess
-subprocess.run(["streamlit", "run", "app.py"])
+import sys
+from streamlit.web import cli as stcli
+
+if __name__ == '__main__':
+    sys.argv = ["streamlit", "run", "app.py"]
+    sys.exit(stcli.main())