update

app.py

@@ -30,10 +30,10 @@ def run_inference(
     confidence: bool,
 ):
     # Read SMILES
-    print("smiles", smiles)
-    if smiles is None and smiles_path is None:
+    print("smiles", type(smiles))
+    if smiles == "" and smiles_path is None:
         raise TypeError("Pass either single SMILES or a file")
-    elif (smiles is not None) and (smiles_path is not None):
+    elif smiles == "" and (smiles_path is not None):
         raise TypeError("Pass either single SMILES or a file, not both")
     elif smiles is not None:
         smiles = [smiles]