Chosen Solution

Is there any way I can fix this issue?

Mel Math  what is the exact model for your TV? Could be a bad main board, bad T-con or a bad panel. Push on the top of your TV where the line starts and see if that makes a difference. Best would be to remove the back and there will most likely be a ribbon cable right at the top of the panel where the error is. Push on it and see if that changes anything. If so it’s the LCD TAB