TRANSFORMATION MODEL DIR - Missing files after training

[Crista23]

The transformation parameters are set by default to "split:drop-ood:drop-rel:drop-mod" in line 38 of start_learning_training_models.py file. My model trains ok, but when applying it to simplify complex sentences it crashes because it cannot find the split nor the drop-rel model files in TRANSFORMATION MODEL DIR:

transformation model ['split', 'drop-ood', 'drop-rel', 'drop-mod']
Traceback (most recent call last):
File "start_simplifying_complex_sentence.py", line 141, in
probability_tables = functions_model_files.read_model_files(D2S_Config_data["TRANSFORMATION-MODEL-DIR"], D2S_Config_data["TRANSFORMATION-MODEL"])
File "./source/functions_model_files.py", line 16, in read_model_files

Can you please suggest how to fix this error? Is it possible that something went wrong with my Moses or MGiza installation? Thank you!