> Line 162 in the said file is :

That is not the line with generating the error though. (Line numbering
can easily be out due to vagaries in dos/unix line ends etc.

The error means that you have something like

test="zzzz"  or  ... [zzzzz]  and zzz evaluates to a sequence whose
first item is not a node but is a number or a string or some other
atomic value.  If the sequence doesn't consist of nodes then to use it
as a boolean in a test it has to consist of a single item, which is a
boolean value either true or false. If the sequence is a sequence of
nodes then, as in xpath1 it will count as false if it is empty and true
otherwise.

David


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