Пример файла resources.qrc

custompopups/resources.qrc

 <RCC>
     <qresource prefix="/">
         <file>main.qml</file>
         <file>CustomAlertPopup.qml</file>
         <file>CustomAuthPopup.qml</file>
         <file>CustomConfirmPopup.qml</file>
         <file>CustomLocationPopup.qml</file>
         <file>CustomPasswordManagerPopup.qml</file>
         <file>CustomPromptPopup.qml</file>
         <file>CustomBlockedTabPopup.qml</file>
     </qresource>
 </RCC>