Socket closes soon

[skyies618]

Hello, I tried commands according to README but it did't work well.
From log, unix sockets closed soon.
I couldn't fix it.
The log is following:

2025-11-21 02:17:49,998 CRIT Supervisor is running as root.  Privileges were not dropped because no user is specified in the config file.  If you intend to run as root, you can set user=root in the config file to avoid this message.
2025-11-21 02:17:49,998 INFO Included extra file "/etc/supervisor.d/python3-fcgi.ini" during parsing
2025-11-21 02:17:50,001 INFO Creating socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:50,001 INFO Closing socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:50,004 INFO RPC interface 'supervisor' initialized
2025-11-21 02:17:50,005 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2025-11-21 02:17:50,006 INFO supervisord started with pid 9
2025-11-21 02:17:51,013 INFO Creating socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:51,017 INFO spawnerr: can't find command '/var/www/app/app.fcgi'
2025-11-21 02:17:51,017 INFO Closing socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:52,025 INFO Creating socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:52,032 INFO spawnerr: can't find command '/var/www/app/app.fcgi'
2025-11-21 02:17:52,033 INFO Closing socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:54,044 INFO Creating socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:54,050 INFO spawnerr: can't find command '/var/www/app/app.fcgi'
2025-11-21 02:17:54,050 INFO Closing socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:57,068 INFO Creating socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:57,075 INFO spawnerr: can't find command '/var/www/app/app.fcgi'
2025-11-21 02:17:57,076 INFO Closing socket unix:///tmp/python3-fcgi.sock
2025-11-21 02:17:57,076 INFO gave up: python3-fcgi entered FATAL state, too many start retries too quickly

I tried it on Windows 11 Home 25H2 and macOS Sequoia 15.7.2.
Both OS failed and put same log.
Please check it out.
Thank you.