SSRS Report is not launching

Hello, friends

It would be nice if someone could help me. Recently I have created SSRS report and its subsequent Control, Contract and DP classes however when trying to launch the report from the form menu some kind of error appears all the time (please see screenshot). I have tried to launch it in debug mode with lots of breakpoints but it seems that it even doesnt start to run through code, the error appears as soon as you click on the menu item. Could someone please help me? Do I need to look for the error in Control, Contract and DP classes or as with debugger the code doesnt even start to run the problem is somewhere else?

Best regards,


The english version of the error text.

Did it build correctly? Did you deploy the report? Was it successful?