Fixing error failed to launch, determine start command

This error happens very frequently on apps deployed with Qoddi and creates a 502 error:

ERROR: failed to launch: determine start command: when there is no default process a command is required

This error means there is no default process to launch with your app and a Procfile must be added. Depending on the language of your app the Procfile syntax is different but always start by web: like that:

web: command to launch

Important: all Procfile on Qoddi starts with web: even if your app is worker.

Note: Apps with this error cannot launch and will trigger a 502 error. Dev Apps that trigger this error will be automatically deleted after a minimum of 24 hours.

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