Does the dataset need to be processed, and if so, what kind of processing is required?

[Ambrumax]

Hello Professor,
I encountered an issue while reproducing the baseline tracker using the dataset you provided. For example, when testing SiamFC, I got an error from the OpenCV cv2.resize() function, which indicates (-215: Assertion failed) !ssize.empty(). This means the input image is empty (ssize is empty). Do I need to preprocess the dataset in some way before using it?
What processing needs to be done on the dataset? What code needs to be run? I would appreciate it if you could respond in detail.
Thank you very much.