Add space in error message
@@ -100,7 +100,7 @@ def _standardize_input_data(data, names, shapes=None,
if len(names) > 1:
# Case: model expects multiple inputs but only received
# a single Numpy array.
- raise ValueError('The model expects ' + str(len(names)) +
+ raise ValueError('The model expects ' + str(len(names)) + ' ' +
exception_prefix +
' arrays, but only received one array. '
'Found: array with shape ' + str(data.shape))
