Problem with displaying proper graphics with qt creator

ARKDev2021

Background: I'm new to qt. After installing it I had a problem with form editor~ "qt emulation layer crashed". I tried all the ways that were provided over the net, but at that time nothing worked. however mysteriously the next day it started working.

Problem: the form editor does not show the image (icon) that it is supposed to show. however the output that occurs when i run it is the correct one.

form editor:

enter image description here

output:
enter image description here

the output is working fine as this is exactly what i want. but the form editor seems to misbehave a bit. Qt creator only shows an error upon executing main.qml (the output runs perfectly fine though)

Error: QML Image: Cannot open: qrc:/qtquickplugin/images/template_image.png

Code:

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtGraphicalEffects 1.15

Button{
id: btntoggle

// CUSTOM PROPERTIES
property url btnIconSource: "../../images/svg_images/menu_icon.svg"
property color btnColorDefault: "#1c1d20"
property color btnColorMouseOver: "#23272E"
property color btnClicked: "#00a1f1"

QtObject{
id: internal

// PROPERTY TO CHANGE COLOR
property var dynamicColor: if(btntoggle.down){
                               btntoggle.down ? btnClicked : btnColorDefault
                           }else{
                               btntoggle.hovered ? btnColorMouseOver: btnColorDefault
                           }

}

implicitWidth: 70
implicitHeight: 60

background: Rectangle{
id:bgbtn
color: internal.dynamicColor

Image {
    id: iconBtn
    source: btnIconSource
    anchors.verticalCenter: parent.verticalCenter
    anchors.horizontalCenter: parent.horizontalCenter
    height: 25
    width: 25
    fillMode: Image.PreserveAspectFit
}

ColorOverlay{
    anchors.fill: iconBtn
    source: iconBtn
    color: "#ffffff"
    antialiasing: false
}

}
}

qtprogrammer123

Hi,
did you added image to qml.qrc file?

ARKDev2021

@qtprogrammer123 Hi!
no I did not as it was not shown in the videos I was watching on the YouTube.

ARKDev2021

@qtprogrammer123 Though I have just noticed that the same error occurs in the editor of the youtuber too. But his works fine regardless of the error.