Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. create the switch with active icon = Image.asset.
2. change toggleColor: Colors.red (to make it more visible)
3. See error

Expected behavior
The image should be filled and have a fixed height and width (no red color).

Screenshots

Smartphone (please complete the following information):

• Device: iPhone Xr
• OS: iOS15

Additional context
Source code:

return FlutterSwitch( value: _currentValue, onToggle: (newValue) { setState(() { _currentValue = newValue; }); }, height: 30, activeIcon: Image.asset( 'slider-thumb'.pngAssetsPath, height: 30, ), inactiveIcon: Image.asset( 'slider-thumb'.pngAssetsPath, height: 30, ), toggleColor: Colors.red, activeColor: CustomColors.greenIndicator, inactiveColor: CustomColors.pinkIndicator, ); 

Thanks