[VE][html5] internal error from xmlns=""

 

My document contain this element

<ul id="mainMenu" class="menulevel1 sf-menu" xmlns="">

which clearly has an invalid xmlns attribute.

 

 

The validator stumbled when it saw the rotten attribute with the error "A
bug manifested itself in the application internals. Unable to continue"

 

You need a validation error message to cover it.