Request did not return bytes

Request:

<Request at 0x7f99ec48dfa0 method=POST uri=/wbkd/xwidget/gen.html clientproto=HTTP/1.1>

Resource:

<onliner.app.widgets.bwidget.BarWidgetDesignerDispenser object at 0x7f99a9726340>

Value:

'Something wrong: probabily the lcode inserted is not valid!'