This solution for for an error when searching for deposits using webanagrafica in Italy online using the below url:
https://backoffice.stanleybet.it/webanagrafica/ricercadepositiesercizi.jsp
There appears to be an error with the default 'All / Tutti' option which can be worked around as described below.
Simply selecting a partner in the partner field appears to prevent the error from being generated.
In this case 'stanleybet - (STANLEY-SKIN)'
the value is selected, click on Ricerca /Search to complete the search request