Failed to resolve resource 'ApplicationPageBackgroundThemeBrush'?

Question

WPF

Failed to resolve resource 'ApplicationPageBackgroundThemeBrush'. What is the error and how to fix it?

Answer 1

1) Install an IDE with a normal interface language (English)
already at this stage, errors will begin to google and most likely you will find a solution yourself.
2) Give more information about what you are trying to do and how, all clairvoyants are on summer vacation.
Because the answer to your question in its current form is:
-The error says that the resource could not be resolved. Fix - give the opportunity to resolve it.