fix: pad single-row input for SAP RPT-1 OSS predict (np.concatenate crash)

webapp/benchmark.py

@@ -110,12 +110,23 @@ class _SAPModel:
         return self
 
     def predict(self, X):
-        preds = self._model.predict(X)
+        if self._real and len(X) == 1:
+            # SAP RPT-1 OSS crashes on single-row input (np.concatenate on 0-dim arrays).
+            # Duplicate the row to form a 2-row batch, then return only the first result.
+            import pandas as pd
+            X_pad = pd.concat([X, X], ignore_index=True) if hasattr(X, 'iloc') else np.vstack([X, X])
+            preds = self._model.predict(X_pad)[:1]
+        else:
+            preds = self._model.predict(X)
         if not self._real and self.task == "classification":
             preds = self._le.inverse_transform(preds)
         return preds
 
     def predict_proba(self, X):
+        if self._real and len(X) == 1:
+            import pandas as pd
+            X_pad = pd.concat([X, X], ignore_index=True) if hasattr(X, 'iloc') else np.vstack([X, X])
+            return self._model.predict_proba(X_pad)[:1]
         return self._model.predict_proba(X)
 
     @property