Oracle Message LPX-01138 - [XUTY0010] Invalid replacement sequence for replace

ERROR[XUTY0010] Invalid replacement sequence for replace
CAUSEIn a replace expression where value of is not specified and the target is an element, text, comment, or processing instruction node, it is a type error if the replacement sequence does not consist of zero or more element, text, comment, or processing instruction nodes.
ACTIONNone