jupyter from pod -- unable to create file or folder, anywhere under /workspace

[W 2025-06-16 09:10:43.171 ServerApp] 403 GET /api/events/subscribe ([email protected]) 1.22ms referer=None

2:10:43 AM

[W 2025-06-16 09:10:43.546 ServerApp] Blocking Cross Origin API request for /api/contents. Origin: https://uuas4i5ck2n28b-8888.proxy.runpod.net, Host: 100.65.24.178:60798

2:10:43 AM

[W 2025-06-16 09:10:43.546 ServerApp] wrote error: 'Not Found'

2:10:43 AM

Traceback (most recent call last):

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File "/usr/local/lib/python3.10/dist-packages/tornado/web.py", line 1827, in _execute

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result = await result # type: ignore

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File "/usr/local/lib/python3.10/dist-packages/jupyter_server/base/handlers.py", line 754, in prepare

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raise web.HTTPError(404)

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tornado.web.HTTPError: HTTP 404: Not Found

2:10:43 AM

[W 2025-06-16 09:10:43.547 ServerApp] 404 POST /api/contents?1750065043124 ([email protected]) 2.48ms referer=https://uuas4i5ck2n28b-8888.proxy.runpod.net/tree?

2:10:46 AM

[W 2025-06-16 09:10:46.692 ServerApp] Blocking Cross Origin API request for /api/events/subscribe. Origin: https://uuas4i5ck2n28b-8888.proxy.runpod.net, Host: 100.65.24.178:60798

2:10:46 AM

[W 2025-06-16 09:10:46.693 ServerApp] 403 GET /api/events/subscribe ([email protected]) 1.24ms referer=None

2:10:52 AM

[W 2025-06-16 09:10:52.848 ServerApp] Blocking Cross Origin API request for /api/events/subscribe. Origin: https://uuas4i5ck2n28b-8888.proxy.runpod.net, Host: 100.65.24.178:60798

2:10:52 AM

[W 2025-06-16 09:10:52.848 ServerApp] 403 GET /api/events/subscribe ([email protected]) 1.23ms referer=None