What is the start-up problem of the node project?

there is an online node project, and after installing a restart of the forever, server, the node project will not start properly.

the startup process using forever is as follows: 

$forever start /var/www/html/nipt/niptWeb/bin/www

clipboard.png
Service Unavailable

npm start :

clipboard.png
the URL is opened at this time and can be accessed normally, but after the Ctrl+C background exits, the web page prompts Service Unavailable

again.

what is the reason why the forever directive fails to start the project?

Forever backend linux node.js
Mar.14,2022

problem solved
query all running forever processes, kill off, and rerun forever start /.. /.. / www

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bdb73e-31259.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bdb73e-31259.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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