Why does my Samsung Tab 4 say unfortunately the process com.android.systemui has stopped?

riethu

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Dec 6, 2014
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Why does my Samsung tab 4 say "unfortunately the process com.android.systemui has stopped"

Every time I use chrome cast, seconds after this message would continuously pop up even after pressing OK every time until my tab turns off manually or automatically. After, I have to hold the power button for at least 20 seconds before it turns on as though I had turned the power off completely. Everything else works normally except chrome cast. All other electronics such as my laptop and android phone work when using chrome cast.