ValueError: Fernet key must be 32 url-safe base64-encoded bytes.

[dacrudg]

When I insert the API key then click "Save" I get this in the error log (test doesn't work either):

headscalewebui | [2024-12-11 06:17:31,798] ERROR in app: Exception on /api/save_key [POST]
headscalewebui | Traceback (most recent call last):
headscalewebui | File "/app/.venv/lib/python3.11/site-packages/flask/app.py", line 2190, in wsgi_app
headscalewebui | response = self.full_dispatch_request()
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/.venv/lib/python3.11/site-packages/flask/app.py", line 1486, in full_dispatch_request
headscalewebui | rv = self.handle_user_exception(e)
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/.venv/lib/python3.11/site-packages/flask/app.py", line 1484, in full_dispatch_request
headscalewebui | rv = self.dispatch_request()
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/.venv/lib/python3.11/site-packages/flask/app.py", line 1469, in dispatch_request
headscalewebui | return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/server.py", line 114, in decorated
headscalewebui | return view_func(*args, **kwargs)
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/server.py", line 350, in save_key_page
headscalewebui | file_written = headscale.set_api_key(api_key)
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/headscale.py", line 47, in set_api_key
headscalewebui | fernet = Fernet(encryption_key)
headscalewebui | ^^^^^^^^^^^^^^^^^^^^^^
headscalewebui | File "/app/.venv/lib/python3.11/site-packages/cryptography/fernet.py", line 39, in init
headscalewebui | raise ValueError(
headscalewebui | ValueError: Fernet key must be 32 url-safe base64-encoded bytes.

This is with headscale 0.23.0. This is the API Key it creates with "docker exec headscale headscale apikey create":

MIMgOc9zqA.Tqv_uuNTjq0ct2TFzvxNv5uGkNsdNfZjEh0EgIGVhBx

Any help would be much appreciated thank you