IndexError: list index out of range

[zcq23]

Hello, when I run the example, I encountered such an error: Traceback (most recent call last):
File "/data2/zcq/protac/PROTAC-Model-master/main.py", line 102, in
main()
File "/data2/zcq/protac/PROTAC-Model-master/main.py", line 91, in main
fro.filter_frodock(cpu, lig_locate_num, target_smi, rec_smi)
File "/data2/zcq/protac/PROTAC-Model-master/utils/frodock.py", line 126, in filter_frodock
pool.map(filtering, para_list)
File "/home/zqy/miniconda3/envs/protac/lib/python2.7/multiprocessing/pool.py", line 253, in map
return self.map_async(func, iterable, chunksize).get()
File "/home/zqy/miniconda3/envs/protac/lib/python2.7/multiprocessing/pool.py", line 572, in get
raise self._value
IndexError: list index out of range

I don't know how to adjust and what to adjust. My code and path look like this: python2 /data2/zcq/protac/PROTAC-Model-master/main.py -irec /data2/zcq/protac/PROTAC-Model-master/example_1/receptor.pdb -ilig /data2/zcq/protac/PROTAC-Model-master/example_1/target.pdb -site=-35.73,13.75,-27.92 -ismi /data2/zcq/protac/PROTAC-Model-master/example_1/protac.smi -o docking_1 -cpu 28
export ADFRSUITE=/data2/zcq/protac/ADFRsuite_x86_64Linux_1.0
export FRODOCK=/data2/zcq/protac/frodock3_linux64
export PATH=$PATH:/data2/zcq/protac/frodock3_linux64/bin
export VINA=/data2/zcq/protac/AutoDock-Vina-1.2.2/build/linux/release
export VOROMQA=/data2/zcq/protac/voronota_1.28.4132
export FCC=/data2/zcq/protac/fcc
export ROSETTA=/data2/zcq/protac/rosetta
I would be very appreciate it if you could take the time to help me, thanks a lot!