error on FastDTWBDError, plz help

[Tianxu-Jia]

File "/usr/local/lib/python3.9/site-packages/afaligner/c_dtwbd_wrapper.py", line 49, in c_FastDTWBD
raise FastDTWBDError(
afaligner.c_dtwbd_wrapper.FastDTWBDError: The FastDTWDB() C function raised an error. See stderr for more details.

[Tianxu-Jia]

ERROR: malloc() failed when allocating D_matrix
Traceback (most recent call last):
File "/usr/local/bin/syncabook", line 8, in
Calling afaligner for syncing...
sys.exit(main())
File "/usr/local/lib/python3.9/site-packages/syncabook/main.py", line 157, in main
sync(
File "/usr/local/lib/python3.9/site-packages/syncabook/sync.py", line 15, in sync
sync_map = align(
File "/usr/local/lib/python3.9/site-packages/afaligner/init.py", line 92, in align
sync_map = build_sync_map(
File "/usr/local/lib/python3.9/site-packages/afaligner/init.py", line 211, in build_sync_map
_, path = c_FastDTWBD(text_mfcc_sequence, audio_mfcc_sequence, skip_penalty, radius=radius)
File "/usr/local/lib/python3.9/site-packages/afaligner/c_dtwbd_wrapper.py", line 49, in c_FastDTWBD
raise FastDTWBDError(
afaligner.c_dtwbd_wrapper.FastDTWBDError: The FastDTWDB() C function raised an error. See stderr for more details.