How to get cameras local x-axis pointing up? I have my Camera moving along a Path, and following an object with a damped track constraint, but i does some weird movement, like rotating on its own. In order to fix it I would like to make the local x-Axis of the camera always facing upwards. How can I do this? Is there a Constraint for that?

(I have deleted all rotation frames, but it still is messy, I also have tried to lock the axis, on the n-panel but since this is global it won't work..)
You probably want to use the "Track To" constraint. Then you can configure which axis should point to the object, and which axis should point upward. For a camera this would be typically -Z for the "To" axis, and Y for the "Up" axis: