Container(
                decoration: BoxDecoration(
                  color: Colors.red,
                  borderRadius: BorderRadius.only(
                    bottomLeft: Radius.circular(50.0),
                    topLeft: Radius.circular(50.0),
                  ),
                ),
                margin: EdgeInsets.only(left: 30.0),
                height: 150,
                width: double.infinity,
              ),

I have out the color inside the container but still having same issue.