fond creates XRX-error

Created by: GVogeler

Type error: sequence with less or more than one item is not allowed here [at line 161, column 26, source: /db/XRX.live/mom/app/charters/charters.xqm] In function: charters:years(item()*) [1:2383:/db/XRX.live/mom/app/charters/charters.xqm] local:eval(element()) [292:30:/db/XRX.live/mom/app/xrx/main.xql] local:mode-mainwidget() [427:13:/db/XRX.live/mom/app/xrx/main.xql] local:main() [444:1:/db/XRX.live/mom/app/xrx/main.xql]