Fix: Add note about APP_ROOT_PATH to documentation regarding Vagrant. (Redmine issue: #7598)

doc/sphinx/_doclib/development.rst

@@ -685,6 +685,11 @@ boot-up your development box and connect to it via SSH:
 	time vagrant up
 	vagrant ssh
 
+.. note::
+
+	Make sure you don't have ``.env`` in your directory. Having ``APP_ROOT_PATH``
+	environment variable set may result in database relations not being created.
+
 After connecting to development machine you will be greeted with banner and some
 initial tips: