Update error msg

Author: aditya0by0

chebai/preprocessing/reader.py

@@ -205,7 +205,7 @@ def _read_data(self, raw_data: str) -> List[int]:
                 if mol is not None:
                     raw_data = Chem.MolToSmiles(mol, canonical=True)
             except Exception as e:
-                print(f"RDKit failed to process {raw_data}")
+                print(f"RDKit failed to canonicalize the SMILES: {raw_data}")
                 print(f"\t{e}")
         try:
             mol = Chem.MolFromSmiles(raw_data.strip())
@@ -218,7 +218,6 @@ def _read_data(self, raw_data: str) -> List[int]:
             return None
 
     def _back_to_smiles(self, smiles_encoded):
-
         token_file = self.reader.token_path
         token_coding = {}
         counter = 0