-16036 THE URI THAT IS SPECIFIED IN A NAMESPACE DECLARATION CANNOT BE A ZERO-LENGTH STRING

Explanation
 The URI that is specified in a namespace declaration
must be a valid URI that conforms to the generic URI syntax specified
by the World Wide Web Consortium (W3C). The URI cannot be a zero-length
string.

System action
 The XQuery expression cannot be processed.

Programmer response
 Specify a valid URI in the namespace declaration.

SQLSTATE
 10504