ML train with error in process_features()

[whale-withme]

Hi! When I use mlflow train module and type

./slips -f dataset/test7-malicious.pcap -c config/slips.conf 

but I got response like Error in process_features() here

[Input] Storing zeek log files in output/test7-malicious.pcap_2024-07-16_02:55:19/zeek_files
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 51.0.
[Flow ML Detection] Error in process_features()
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 101.0.16 02:55:28)
[Flow ML Detection] Error in process_features()
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 151.0.
[Flow ML Detection] Error in process_features()
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 201.0.
[Flow ML Detection] Error in process_features()
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 251.0.
[Flow ML Detection] Error in process_features()
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 301.0.
[Flow ML Detection] Error in process_features()
[Flow ML Detection] Training the model with the last group of flows and labels. Total flows: 351.0.07/16 02:55:33)
[Flow ML Detection] Error in process_features()
^C[Input] Stopping. Total lines read: 541

how should I do?