Anime: Still frame when exporting animation

[VICTOR HUGO254057131r1x]

Hello everyone, I'm very new in Animate, I'm trying to do a rotoscope animation but when I export it to mp4 there is a frame that prevails through the entire animation, I can't understand why and which exactly is because while editing it doesn't show up. I may have done something in a frame to keep it that way, is there any way to eliminate any specific property to all the frames so I can stop having this issue?

[JoãoCésar]

Hi.

If it is visible during the entire animation it is because the related layer is extended to the end and the same layer is not a guide.

Do you mind showing a screenshot of your timeline so we can understand better what's going on?

Regards,

JC