I am trying to deploy a small Node.js application to Heroku, and then have the Heroku Scheduler run the application every 10 minutes. Our customers former supplier who built this application also hosted it on Heroku, so there should be no need to change anything in the sourcecode, that I have received. Nevertheless I am getting the following error from the Heroku log.
2018-05-09T07:26:07.710882+00:00 app[api]: Starting process with command `fetch` by user [email protected]
2018-05-09T07:26:11.124833+00:00 heroku[scheduler.2653]: Starting process with command `fetch`
2018-05-09T07:26:11.718182+00:00 heroku[scheduler.2653]: State changed from starting to up
2018-05-09T07:26:13.647479+00:00 heroku[scheduler.2653]: State changed from up to complete
2018-05-09T07:26:13.629258+00:00 heroku[scheduler.2653]: Process exited with status 126
2018-05-09T07:26:13.542885+00:00 app[scheduler.2653]: bash: /app/bin/fetch: /usr/local/bin/node: bad interpreter: No such file or directory
Apparently there's an issue with the 'Shebang' line in my fetch file which runs my index.js file:
#!/usr/local/bin/node
var path = require('path');
require(path.join(__dirname, '../index')).start();
I am rather new to Node.js and Javascript, so I'm not sure I fully understand the purpose of the 'Shebang' line. But I'm guessing it is pointing to a wrong location or something like that? How do I figure out, what to change in this line?
Shebang line tells which interpreter to use to run the file. Error you receive tells that node is not installed in location shebang points to. Using #!/usr/bin/env node usually works.