Datetime is not supporting in lead form

ERPNext Selling/CRM
1

Traceback (most recent call last):
File “/home/umoms/moms-bench/apps/frappe/frappe/core/doctype/data_import/importer.py”, line 378, in upload
doc, attachments, last_error_row_idx = get_doc(row_idx)
File “/home/umoms/moms-bench/apps/frappe/frappe/core/doctype/data_import/importer.py”, line 160, in get_doc
if " " in d[fieldname]:
TypeError: argument of type ‘datetime.datetime’ is not iterable