Problem

When trying to login, application displays the following error: "Exception caught: 500 The call failed on the server". This can happen if the browser window with the application stayed open during update or if the browser session has expired or if database is not running.

Solution

  1. Refresh browser (Ctrl+F5) and then log in again OR log out and log in manually.

If this doesn't work, access the server via ssh and execute the following commands:

  1. Check the status of database and start the postgresql service
    1. service postgresql-9.3 status
    2. service postgresql-9.3 start
  2. Restart tomcat6 service (to register the application on the database)
    1. service tomcat6 stop
    2. service tomcat6 start

Info

Names of Tomcat and PostgreSQL services in these article are an example. Check which version of these services are installed on your server and use those names in the commands listed above. For example, if you have installed Tomcat 7 the command 2a will be service tomcat7 stop