Error in plecs while simulating

Hello , Am just learning and new to PLECS software , and I got these errors , what should I do?
I have defined the variables in the simulation parameters under Initialization as shown in the screenshot below , but i still get these errors
I was actually trying to model a DC motor (the mechanical and electrical system)
Thank you for your help

hi BAEM,

It would be much easier to help debug the issue if you could share your model here.

You have several variables in the component masks are defined as their default value of <reference>. For Combo Box (i.e. drop-down) menus in component masks, you can chose between the available options or enter in a variable defined in the Initialization Commands. When you are assigning a variable to the field the default value is <reference> as shown in the figure below. The text in the combo field is then editable by the user where you can enter in a variable name.

In your case, you must have set several parameters like the “Multiplication” behavior and “Output data” type from their default values of “Element-wise” and “Inherited”. Set those back and your simulation should run.

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