Without knowing anything about your system, AE and Ppro versions, the AE comp, project settings, fonts used and so on nobody can tell you anything.
Check your text layer by selecting it in the timeline and pressing the U key twice. If the text layer is 3D then also check the camera layer. You'll see any animated properties. If there is nothing wrong then you probably have a cache problem so purge everything and render again. If that does not fix your problem then we need details about everything from the comp to the render settings.