If it is, the material is not secured in place. Check that the pinch rollers are within the edges of the material, and raise the loading lever.
If the front edge of the material is cut at an angle, trim off an excess portion so that the front edge is parallel with the guides, and then load the material.
Make sure that the left and right edges of the material do not make contact with the inner surfaces of the machine during cutting. Such contact not only damages the material, but also hinders normal material feed and causes the material to slip out of position.
If you start cutting without checking the material feed, correct cutting results may not be obtained. In the worst case, it may cause an error or malfunction or damage to the material.
Move the machine to a location where direct sunlight or indoor light does not hit the machine.