unable to start pm2 flask application

[vijaysagi1]

What's going wrong?

unable to start the flask application
the error is

[2018-07-23T07:23:29.818Z] PM2 log: ===============================================================================
[2018-07-23T07:23:29.818Z] PM2 error: [PM2] Resurrecting PM2
Be sure to have the latest version by doing npm install pm2@latest -g before doing this procedure.
[PM2] Saving current process list...
/usr/local/lib/node_modules/pm2/node_modules/pidusage/lib/procfile.js:26
buf = Buffer.alloc(SIZE)
^
TypeError: Buffer.alloc is not a function
at readUntilEnd (/usr/local/lib/node_modules/pm2/node_modules/pidusage/lib/procfile.js:26:18)
at /usr/local/lib/node_modules/pm2/node_modules/pidusage/lib/procfile.js:67:5
at FSReqWrap.oncomplete (fs.js:82:15)

How could we reproduce this issue?

pm2 start app.py

Supporting information

nodejs version: 4.2.6
pm2 3.0.0
npm 6.1.0

$ pm2 report



pls suggest the way forward```

[wallet77]

Hi @vijaysagi1

It's because a flask app cannot be started as normal python app.
It should be started with flask run command.

$ export FLASK_APP=hello.py
$ pm2 start "flask run"

[Unitech]

Buffer.alloc requires Node v4.5.0

[vijaysagi1]

Thank u so much. its working