Deprecated:  htmlentities(): Passing null to parameter #1 ($string) of type string is deprecated in /home/site/wwwroot/wp-content/themes/huntsman-child/single-mobile.php on line 96

<controls:ErrorLabel Margin="{StaticResource FormMargins}"
                     Padding="0,10,0,10"
                     Errors="{Binding Report.Errors[PaymentDate]}" />

• Errors
  • List of errors
  • Default is Empty List
• ErrorName
  • Used to add error name to the ‘is required’ error message
  • Default is String.Empty

Most of the time the error will be linked up with the automatic validation.
But there are cases where we need to manually set the error from the code behind - 

LblErrorEmailContactNumberRequired.Errors = new List<string> { AppResources.ValidateEmailandContactNumber };