stackparser error in 3.51.

[KiPSOFT]

What's going wrong?

PM2 restart repeatly.

How could we reproduce this issue?

Run again.

Supporting information

{ E_AMI_SOCKED_CLOSE: Lost connection to server.
at Socket. (/var/api/node_modules/asterisk.io/lib/ami.js:277:30)
at Socket.emit (events.js:198:13)
at Socket.EventEmitter.emit (domain.js:448:20)
at TCP._handle.close (net.js:606:12)
message: 'Lost connection to server.',
name: 'E_AMI_SOCKED_CLOSE' }
/usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/stackParser.js:81
const context = this.cache.get(userFrame.file_name);
^
TypeError: Cannot read property 'file_name' of null
at StackTraceParser.parse (/usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/stackParser.js:81:50)
at StackTraceParser.retrieveContext (/usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/stackParser.js:121:21)
at NotifyFeature.onUncaughtException (/usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/features/notify.js:112:45)
at process.emit (events.js:203:15)
at process.EventEmitter.emit (domain.js:448:20)
at process._fatalException (internal/bootstrap/node.js:496:27)
PM2 | App [api_release_auto_start:0] exited with code [7] via signal [SIGINT]
PM2 | App [api_release_auto_start:0] starting in -fork mode-

$ pm2 report

[Unitech]

x-posted keymetrics/pm2-io-apm#261