The actual type of the value for parameter 2 does not match the sequence type declared in the signature of function: harmonia-function:get-submenu($a as xs:string*, $b as node, $c as xs:string*) element*. Expected cardinality: exactly one, got 0. [at line 36, column 35] In call to function: harmonia-function:get-submenu(xs:string*, node, xs:string*) [36:35] harmonia-function:get-menu-content(node?, xs:string*) [9:27] harmonia-function:get-menu(xs:string*, xs:string*, xs:string*) [80:19]

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