Model Fails to Train

[LaneMatthewJ]

**Bug 🐞 **
Upon downloading and attempting to run the software fails to train the model

To Reproduce

1. git cloned https://github.com/VIB-PSB/iGRN
2. unzipped data directory files: gzip -d *.gz
3. Ran code as recommended via README:

perl learning_matrix.pl --mode train --network ./data/Golden_standard_iGRN.txt --expr ./data/COE_iGRN.txt --matrix ./data/CB_motif_iGRN.txt --cluster ./data/CB_cluster_iGRN.txt --DH ./data/CB_DH_iGRN.txt --CNS ./data/CB_CMM_iGRN.txt --ChIP ./data/GENIE3_iGRN.txt --KNN ./data/CB_KNN_iGRN.txt
> Use of uninitialized value $input in open at learning_matrix.pl line 92, <R> line 43820767.
> readline() on closed filehandle R at learning_matrix.pl line 93, <R> line 43820767.

Desktop:

• OS: macOS 13.3.1 (22E261)