Create BoolConverters.cs
ADD
WalletWasabi.Fluent/Converters/BoolConverters.cs
+using Avalonia.Data.Converters;
+
+namespace WalletWasabi.Fluent.Converters
+{
+ public static class BoolConverters
+ {
+ public static readonly IValueConverter Not =
+ new FuncValueConverter<bool, bool>(x => !x);
+ }
+}
\ No newline at end of file

Create BoolConverters.cs