Passenger (web application could not be started)
We have Ubuntu 18.04 and BITNAMI REDMINE+AGILE STACK installed. Everything works well, but when we are trying to add some plugins and restart apache, we get passenger error "Web application could not be started". Currently in Russia we have www.phusionpassenger.com site blocked by government (i don't realy know the reason of that) can it be the main reason of an error? What should we check to find a root of the problem?
Maybe it is not a problem of Passenger but plugins. You should be able to find some error in logs/production.log.
Unfortunatly there is no new records in that file. I still have following message. If I delete plugin from folder and restart apache - everything works well again. I don't think it is because of plugin, cuz i have the same behaviour with 3 different plugins: DMSF, File Servers and Gdrive document library.
Error.png (17.8 KB)
Can you see any error messages in Apaches error_log?
Passenger shows detailed error messages on the error page if you set
On. Probably it is very helpful for you to debug the problem. You can add
PassengerFriendlyErrorPages On to the Apache's config.
Passenger can display friendly error pages whenever an application fails to start. This friendly error page presents the startup error message, some suggestions for solving the problem, a backtrace and a dump of the environment variables.
This feature is very useful during application development and useful for less experienced system administrators, but the page might reveal potentially sensitive information, depending on the application. For this reason, friendly error pages are disabled by default, unless PassengerAppEnv (or its aliases such as RailsEnv and RackEnv) is set to development. You can use this option to explicitly enable or disable this feature.