I replicated my the in my project that is giving me the error.
I created a Entity called “Participant” as shown in Figure 1. This entity only has 1 attribute called user and it is an association of type “User[sec$User]”.
This attribute has one view (as Shown in Figure 2).
My project 4 screens in total (as shown in figure 3).
I have 1 service called TestService(as shown in figure 4), where i have method that gets all the users in the participant table, puts it into a list of type “Participants” and returns it (as shown in figure 5).
In figure 6 (the controller of the mainWindow), i that code to print out the login name of the users in the list that i have created in the service…
but every time i use the following code:
it prevents me from logging into the application ( as shown in Figure 7).