error while running

Traceback (most recent call last):
File "C:\Users\MyPC\Downloads\twostageHDR_NTIRE21-master\twostageHDR_NTIRE21-master\main.py", line 37, in
twostageHDR(config).modelInference(options.sourceDir, options.resultDir)
File "C:\Users\MyPC\Downloads\twostageHDR_NTIRE21-master\twostageHDR_NTIRE21-master\mainModule\twostageHDR.py", line 290, in modelInference
testImageList = modelInference.testingSetProcessor()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\MyPC\Downloads\twostageHDR_NTIRE21-master\twostageHDR_NTIRE21-master\utilities\inferenceUtils.py", line 128, in testingSetProcessor
testSetName = t.split("/")[-2]
~~~~~~~~~~~~^^^^
IndexError: list index out of range