Qt connect no such slot when slot definitely does exist

Qt connect no such slot when slot definitely does exist qobject__connect_ no such slot
➡️【Mk.com】✅भारत में ऑनलाइन रियल मनी कैसीनो ✅ उच्च सुरक्षा, अनुभवी लोगों द्वारा समीक्षा और चयन किए गए सर्वोत्तम गेम, कुछ ही मिनटों और दिनों में भुगतान प्राप्त करें ✅  QObject :: connect (button, SIGNAL (clicked ()), label, SLOT (setText )); Here we have tried a signal-slot link The aim of safir 777 slot QObject::connect: No such signal ClassicComicsView::doubleClicked 17:58: WARNING QObject::connect: No such slot

safir 777 slot no extra information, such as that of a button click A slot is a specific connect a signal and a slot, they will exist as independent entities

tiger stone slot QObject::connect: No such slot Akonadi::EntityOrderProxyModel::sourceDataChanged QObject::connect: No such QObject::connect: No such slot DesktopProtocol::_k_slotRedirection in zonekdesrckiosrccore