add condtional to check ndim

Author: antareepsarkar

pandas/core/arrays/numpy_.py

@@ -119,8 +119,12 @@ def __init__(
             )
 
         if values.ndim != 1:
+            # Technically we support 2, but do not advertise that fact.
             raise ValueError("NumpyExtensionArray must be 1-dimensional.")
 
+        if (values.dtype == object and values.ndim != 1):
+            raise ValueError("NumpyExtensionArray must be 1-dimensional.")      
+
         if copy:
             values = values.copy()