Kedro catalog path entries not working on new operating system

Hi all! I have worked with kedro many times in different operating systems and I have never had issues with catalog path entries. It has always been fine to define catalog entries such like

catalog_entry:
  type: AnyDataset
  filepath: data/01_raw/file.extension

whether on windows or mac. Now I'm having an issue with it for the first time. It turns out that the following catalog entry

problematic_catalog_entry
  type: MyCustomDataSet
  mainfolderpath: data/01_raw/file.extension

rises a winerror 3 the system cannot find the path specified when loaded from a Kedro Jupyter Notebook but

problematic_catalog_entry_2
  type: MyCustomDataSet
  mainfolderpath: C:\same\path\but\absolute\data\01_raw\file.extension

doesn't.

This is absolutely my fault because the data set type I'm using is a custom AbstractDataset but I don't have this problem with other custom AbstractDataset . I will attach my _load method because the problem might be there

def _load(self):
        subfolder_names=[ subfolder_name 
                         for subfolder_name in os.listdir(self._mainfolderpath) 
                         if os.path.isdir(os.path.join(self._mainfolderpath, subfolder_name)) 
                        ]
        
        
        wav_paths_dict={}
        for subfolder_name in subfolder_names:
            subfolder_path=os.path.join(self._mainfolderpath, subfolder_name)
            wav_files=[]
            for root, dirs, files in os.walk(subfolder_path):
                for file in files:
                    if file.lower().endswith('.wav'):
                        wav_file_path=os.path.join(root, file)
                        wav_file_name=os.path.split(wav_file_path)[-1].replace('.wav','').replace('.WAV','')
                        wav_files.append((wav_file_name,wav_file_path))
                wav_paths_dict[subfolder_name]=dict(wav_files)

        
        partitioned_dataset_dict={}
        for subfolder_name, sub_dict in wav_paths_dict.items():
            partitioned_dataset=[(wav_file_name,SoundDataset(wav_file_path).load()) for wav_file_name,wav_file_path in sub_dict.items()]
            partitioned_dataset_dict[subfolder_name]=dict(partitioned_dataset)
        
        return partitioned_dataset_dict

On __init__ I'm initializing self._mainfolderpath this way: self._mainfolderpath = PurePosixPath(mainfolderpath) . Thank you very much for yor help again