Installing with PostgreSQL does not create the table 'holiday' and creates the following warning:

Warning: Error with navigation contributor "AdminModule"

Only enabling the Ticket Gantt and Validator still gave the same warning.

  ganttcalendar.admin.holidayadminpanel = disabled 
  ganttcalendar.complete_by_close.completeticketobserver = disabled 
  ganttcalendar.ticketcalendar.ticketcalendarplugin = disabled 
  ganttcalendar.ticketgantt.ticketganttchartplugin = enabled 
  ganttcalendar.ticketvalidator.ticketvalidator = enabled

Creating the holiday table by hand resolved the warning but the creation is not done properly: CREATE TABLE holiday (date TEXT, description TEXT).

1. Please verify in Ticket Gantt if the holiday table is present before trying to open it (resolving the warning and removing dependencies). 2. Please add the PostgreSQL holiday create statement during installation.

Very interested in your update! Great plug-in if this is going to be resolved. Want to roll-out on multiple projects but wait for your update.