train on custom dataset

[EvelyneCalista]

hi i try to reproduce on my custom dataset,
i use "RealSR" settings to run, but got this error below from
File "main.py", line 27, in main
solver.fit()

raise ValueError("empty range for randrange() (%d, %d, %d)" % (istart, istop, width))
ValueError: empty range for randrange() (0, -36, -36)

anyone have idea about this error?