error saving tax rule Property TaxRulesGroup->date_add is not valid

[adtastic]

trying to amend or save a new tax rule throws this error and does not save the change: Property TaxRulesGroup->date_add is not valid.

 

have version 1.6.1.1 thought it was supposed to be fixed in this version.

 

any ideas on how I can fix this need to be able to charge tax in an area asap.

[Ravns]

Hey.

I do have the same problem. Running ver 1.6.1.9

Does anyone know a solution - and want to share?

[zod]

The problem is in the database. So, you need to use PHPMyAdmin or any other MySql administration tool.
Open the table "ps_tax_rules_group" (i have the default prefix "ps_", use your own).
You should have at least one record for your tax rule, it has two columns: "date_add" and "date_upd". Their values should be something like " 0000-00-00 00:00:00", THIS gives error. You need to update your record adding a correct date value, in my case i put " 2016-11-10 00:00:00" and " 2018-11-10 00:00:00".
Once you do this, Prestashop Tax Rules will work again.