<Stepper activeStep={this.state.stepIndex}  connector={<ArrowForwardIcon />}  >
                    <Step key="1">
                        <StepLabel > bla1</StepLabel>
                    </Step>
                    <Step key="2">
                        <StepLabel > bla1</StepLabel>
                    </Step>
                </Stepper>

react-dom.development.js:506 Warning: Received `false` for a non-boolean attribute `active`.

If you want to write it to the DOM, pass a string instead: active="false" or active={value.toString()}.

If you used to conditionally omit it with active={condition && value}, pass active={condition ? value : undefined} instead.
    in svg (created by ForwardRef(SvgIcon))
    in ForwardRef(SvgIcon) (created by WithStyles(ForwardRef(SvgIcon)))
    in WithStyles(ForwardRef(SvgIcon)) (created by ForwardRef)
    in ForwardRef
    in ForwardRef (created by OperationProgress)
    in div (created by ForwardRef(Paper))
    in ForwardRef(Paper) (created by WithStyles(ForwardRef(Paper)))
    in WithStyles(ForwardRef(Paper)) (created by ForwardRef(Stepper))
    in ForwardRef(Stepper) (created by WithStyles(ForwardRef(Stepper)))
    in WithStyles(ForwardRef(Stepper)) (created by OperationProgress)
    in div (created by OperationProgress)
    in OperationProgress (created by ConnectFunction)
    in ConnectFunction (created by Context.Consumer)
    in withRouter(Connect(OperationProgress)) (created by OperationDashboardElement)
    in div (created by ForwardRef(DialogContent))
    in ForwardRef(DialogContent) (created by WithStyles(ForwardRef(DialogContent)))
    in WithStyles(ForwardRef(DialogContent)) (created by OperationDashboardElement)
    in div (created by ForwardRef(Paper))
    in ForwardRef(Paper) (created by WithStyles(ForwardRef(Paper)))
    in WithStyles(ForwardRef(Paper)) (created by ForwardRef(Dialog))
    in div (created by Transition)
...

Warning: Received `true` for a non-boolean attribute `completed`.

If you want to write it to the DOM, pass a string instead: completed="true" or completed={value.toString()}.
    in svg (created by ForwardRef(SvgIcon))
    in ForwardRef(SvgIcon) (created by WithStyles(ForwardRef(SvgIcon)))
    in WithStyles(ForwardRef(SvgIcon)) (created by ForwardRef)
    in ForwardRef
    in ForwardRef (created by OperationProgress)
    in div (created by ForwardRef(Paper))
    in ForwardRef(Paper) (created by WithStyles(ForwardRef(Paper)))
    in WithStyles(ForwardRef(Paper)) (created by ForwardRef(Stepper))
    in ForwardRef(Stepper) (created by WithStyles(ForwardRef(Stepper)))
    in WithStyles(ForwardRef(Stepper)) (created by OperationProgress)
    in div (created by OperationProgress)
    in OperationProgress (created by ConnectFunction)
    in ConnectFunction (created by Context.Consumer)
    in withRouter(Connect(OperationProgress)) (created by OperationDashboardElement)
    in div (created by ForwardRef(DialogContent))
    in ForwardRef(DialogContent) (created by WithStyles(ForwardRef(DialogContent)))
    in WithStyles(ForwardRef(DialogContent)) (created by OperationDashboardElement)
    in div (created by ForwardRef(Paper))
    in ForwardRef(Paper) (created by WithStyles(ForwardRef(Paper)))
    in WithStyles(ForwardRef(Paper)) (created by ForwardRef(Dialog))
    in div (created by Transition)
    in Transition (created by ForwardRef(Fade))
    in ForwardRef(Fade) (created by WithTheme(ForwardRef(Fade)))
    in WithTheme(ForwardRef(Fade)) (created by TrapFocus)
    in TrapFocus (created by Modal)
    in div (created by Modal)
    in ForwardRef(Portal) (created by Modal)
    in Modal (created by ForwardRef(Modal))
    in ForwardRef(Modal) (created by WithTheme(ForwardRef(Modal)))
    in WithTheme(ForwardRef(Modal)) (created by ForwardRef(Dialog))
    in ForwardRef(Dialog) (created by WithStyles(ForwardRef(Dialog)))
    in WithStyles(ForwardRef(Dialog)) (created by OperationDashboardElement)
    in div (created by Styled(MuiBox))
    in Styled(MuiBox) (created by OperationDashboardElement)
    in OperationDashboardElement (created by ConnectFunction)
    in ConnectFunction (created by Context.Consumer)
    in withRouter(Connect(OperationDashboardElement)) (created by AppMaster)
    in div (created by AppMaster)
...