pm2 status "ERRORED"

--- Daemon logs --------------------------------------------
/home/ubuntu/.pm2/pm2.log last 20 lines:
PM2 | at WriteStream.EventEmitter.emit (node:domain:548:15)
PM2 | at node:internal/fs/streams:61:16
PM2 | at FSReqCallback.oncomplete (node:fs:171:23)
PM2 | 2021-07-19T08:57:43: PM2 log: App [server:0] online
PM2 | 2021-07-19T08:57:43: PM2 log: App [server:0] exited with code [1] via signal [SIGINT]
PM2 | 2021-07-19T08:57:43: PM2 log: App [server:0] starting in -fork mode-
PM2 | 2021-07-19T08:57:43: PM2 error: TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be of type string or an instance of Buffer, TypedArray, or DataView. Received type number (7247)
PM2 | at Object.writeFileSync (node:fs:1464:5)
PM2 | at /usr/local/lib/node_modules/pm2/lib/God/ForkMode.js:264:12
PM2 | at wrapper (/usr/local/lib/node_modules/pm2/node_modules/async/internal/once.js:12:16)
PM2 | at next (/usr/local/lib/node_modules/pm2/node_modules/async/waterfall.js:96:20)
PM2 | at /usr/local/lib/node_modules/pm2/node_modules/async/internal/onlyOnce.js:12:16
PM2 | at WriteStream. (/usr/local/lib/node_modules/pm2/lib/Utility.js:186:13)
PM2 | at WriteStream.emit (node:events:327:20)
PM2 | at WriteStream.EventEmitter.emit (node:domain:548:15)
PM2 | at node:internal/fs/streams:61:16
PM2 | at FSReqCallback.oncomplete (node:fs:171:23)
PM2 | 2021-07-19T08:57:43: PM2 log: App [server:0] online
PM2 | 2021-07-19T08:57:44: PM2 log: App [server:0] exited with code [1] via signal [SIGINT]
PM2 | 2021-07-19T08:57:44: PM2 log: Script /home/ubuntu/project/server.js had too many unstable restarts (16). Stopped. "errored"

Start at lib/God/ForkMode.js:264, where the logged writeFileSync error occurs, and compare it with the daemon log showing numeric data 7247. Investigate how server.js reaches this path and determine what behavior should prevent the repeated unstable restarts and resulting ERRORED status.