A page may have one or more parameters in the latest versions of Mendix. Consequently, it is necessary to supply the accurate parameter(s) when accessing that page. A microflow can be used to obtain or generate these parameter(s). The error message indicates that there is currently a mismatch between the supplied parameters and the expected ones. Therefore, it is advisable to review the parameters and verify the data being passed to that page.
Regards
Bhojaraj
Click on the Parameters on the top and see what did you choose.
You should choose a parameter of type Student.
It looks like you have select 1 parameter but from your screenshot it is not clear which one did you select :)
Verify 1 more time. Good luck