Describe the bug
As soon as I use the --cert --key as arguments and the path to the cert contains spaces, I get the following error.

/Library/websockify/websockify/websocket.py:31: UserWarning: no 'numpy' module, HyBi protocol will be slower
warnings.warn("no 'numpy' module, HyBi protocol will be slower")
Usage:
main.py [options] [source_addr:]source_port target_addr:target_port
main.py [options] --token-plugin=CLASS [source_addr:]source_port
main.py [options] --unix-target=FILE [source_addr:]source_port
main.py [options] [source_addr:]source_port -- WRAP_COMMAND_LINE

main.py: error: Error parsing listen port

Failed to start WebSockets proxy

To Reproduce
Steps to reproduce the behavior:

1. Generate a self-signed cert and store it in a path with spaces.
2. start novnc_proxy

Expected behavior
websockify should launch and noVNC accessible.

Screenshots
If applicable, add screenshots to help explain your problem.

Client (please complete the following information):

• OS: macOS 15.4
• Browser: Safari, Microsoft Edge
• Browser version: n/a

Server (please complete the following information):

• noVNC version: latest
• VNC server: macOS built in
• WebSocket proxy: websockify

Additional context
Solution
Changing line 195 of novnc_proxy to the following, solves the issue: ${WEBSOCKIFY} ${SYSLOG_ARG} ${SSLONLY} ${FILEONLY_ARG} --web "${WEB}" ${CERT:+--cert "${CERT}"} ${KEY:+--key "${KEY}"} ${PORT} ${VNC_DEST} ${HEARTBEAT_ARG} ${IDLETIMEOUT_ARG} ${RECORD_ARG} ${TIMEOUT_ARG} ${WEBAUTH_ARG} ${AUTHPLUGIN_ARG} ${AUTHSOURCE_ARG} &