fix

Author: FayazRahman

deeplake/core/tensor.py

@@ -1428,9 +1428,17 @@ def _extract_value(self, htype: str, fetch_chunks: bool = False):
             raise Exception(f"Only supported for {htype} tensors.")
 
         if self.ndim == 1:
-            return self.numpy(fetch_chunks=fetch_chunks)[0]
+            data = self.numpy(fetch_chunks=fetch_chunks)
+            if len(data) == 0:
+                return []
+            else:
+                return data[0]
         else:
-            return [sample[0] for sample in self.numpy(aslist=True)]
+            data = self.numpy(aslist=True, fetch_chunks=fetch_chunks)
+            if len(data) == 0:
+                return []
+            else:
+                return [sample[0] for sample in data]
 
     def text(self, fetch_chunks: bool = False):
         """Return text data. Only applicable for tensors with 'text' base htype."""