Panel Data APP - GPT2 Show Case

Inspired by Deploy on Hugging Face - Mercury Docs (mercury-docs.readthedocs.io)I tried to deploy a Panel app in hugging face spaces.

But I cannot get it working. I cannot create the web socket connection.

The logs look like

2022-04-23 21:03:54,107 400 GET /ws (172.30.0.55) 0.47ms
2022-04-23 22:18:25,800 400 GET /ws (172.30.0.55) 0.47ms
2022-04-24 02:25:40,290 400 GET /ws (172.30.0.55) 0.47ms
2022-04-24 02:25:53,151 400 GET /ws (172.30.0.55) 0.47ms
2022-04-24 02:25:57,850 400 GET /ws (172.30.0.55) 0.47ms
2022-04-24 02:27:02,606 400 GET /ws (172.30.0.55) 0.47ms
2022-04-24 02:47:30,119 400 GET /ws (172.30.0.55) 0.52ms
2022-04-24 03:34:12,633 400 GET /ws (172.30.0.55) 0.58ms
2022-04-24 03:48:38,858 400 GET /ws (172.30.0.55) 0.47ms

For more details see my space Awesome Panel - a Hugging Face Space by MarcSkovMadsen

How do I solve this?