I’m facing the same issue but because of create POS Closing Entry.
My solution is to modify erpnext code in:
erpnext/accounts/doctype/pos_invoice_merge_log.py
I change line 258, from :
tax.charge_type = "Actual"
to
in case in the future anybody facing the same issue and need solution.
Here is my other thread related to my issue
https://discuss.frappe.io/t/error-while-doing-pos-closing-entry/110620
