Unexpected runtime error

The runtime has encountered an unexpected error.

Error source

Page Name:/corso.xsp
Control Id: _id3

Exception

com.ibm.xsp.exception.EvaluationExceptionEx: Error while executing JavaScript computed expression
Error while executing JavaScript computed expression
Script interpreter error, line=17, col=18: 'dbsource' is null

JavaScript code

   1: var server = session.getServerName();
   2: var docp = database.getProfileDocument("(Profile)", null);
   3: var temp = new Array(server, docp.getItemValueString("db_anagrafica"))
   4: 
   5: if (context.getUrlParameter("man").equals("KX0001/2020"))
   6: 	key1 = "Brescia Creattiva"
   7: else
   8: 	key1 = @ReplaceSubstring( @ReplaceSubstring(context.getUrlParameter("man"), "***", " ") , "%20", " ")
   9: 
  10: var key = @DbLookup(temp,"vw107",key1,3);
  11: 
  12: if (context.getUrlParameter("man").equals(""))
  13: 	return null
  14: else if (!@IsError(key) || context.getUrlParameter("man").equals("")){
  15: 	var temp1 = new Array(server, key)
  16: 	var dbsource : NotesDatabase = session.getDatabase(server, key, false)
  17: 	dbsource.getView("vw105").getDocumentByKey("WEBIMG", true)
  18: } else {
  19: 	//è showlab quindi prendo il documento in modo diverso
  20: 	//print(docp.getItemValueString("db_registration"))
  21: 	var dbsource : NotesDatabase = session.getDatabase(server, docp.getItemValueString("db_registration"), false)
  22: 	dbsource.getView("vw010").getDocumentByKey(context.getUrlParameter("man"), true)
  23: }

Stack Trace