Try to fix vis: more debug info from smile

src/streamlit_app.py

@@ -26,6 +26,7 @@ try:
     from rdkit import Chem
     from rdkit.Chem import Draw
 except ImportError:
+    st.error("Can't import Chem and Draw")
     Chem = None
     Draw = None
 
@@ -40,7 +41,8 @@ def get_mol_img(smiles_or_smarts, kekulize=True, size=(250, 250)):
         if mol is None:
             return None
         return Draw.MolToImage(mol, size=size, kekulize=kekulize)
-    except Exception:
+    except Exception as e:
+        st.error(e)
         return None
 # ========== RDKit 工具结束 ==========
 # ============================== CONFIGURATION ==============================