Unable to resolve resource "ApplicationPageBackgroundThemeBrush"?

Unable to resolve resource "ApplicationPageBackgroundThemeBrush". What is the error and how to fix it?
March 25th 20 at 13:35
1 answer
March 25th 20 at 13:37
1) Put the IDE in a normal language interface (English)
at this stage, the errors will start Google and you'll likely find the solution yourself.
2) Give more information about what you're trying to do and how, all clairvoyants in the summer holidays.
Because the answer to your question in its current form:
The error says that failed to resolve the resource. Fix - give the opportunity to resolve it.

Find more questions by tags C#WPF