Export - Page not found

New application, add button with 'Export' of stored procedure with two datetime parameters.

Click export, but get 'Page not found'

Controller seems to be there;

Any thoughts. This basic app is working in angular, but didn't have the option to change the filename there. Blazor seems to give the option for filename, but run into this problem. Never tried a Blazor app before this. Also compile error when I use a page property for the parameter. $ not expected, etc.

Can you post more info how the export parameters are passed?
UPDATE: I was able to reproduce the problem with page properties interpolations ${} - fix will be part of our next update tomorrow. In the meantime here is an example how to pass DateTime parameters for stored procedure export:

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