Why is Tv show vertical color from buttom

My Tv was perfect few minutes ago I was watching a movie all of the sudden a vertical line show up from buttom Plss what could that be

Update (09/08/2022)

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Plsss what is wrong with my Tv it was just perfect few minutes ago all of sudden this stuff appears what could this be I hope is not the panel 😢

Answer this question I have this problem too

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