Hi,

I deleted the Administrator account thinking that it was not necessary but now I can't add new modules, during the installation I always get errors:

KeyError: ('ir.model.data', <function IrModelData.xmlid_lookup at 0x7f636ba222f0>, 'base.user_admin')
ValueError: External ID not found in the system: base.user_admin
ValueError: <class 'ValueError'>: "External ID not found in the system: base.user_admin" while evaluating
"[(4, ref('base.user_root')), (4, ref('base.user_admin'))]"

So I created again a user called Administrator, I put him all the possible rights on the interface but it is not enough.

According to my researches on the forum I have to make an action on the datanase but I don't know how to do it. Can you help me?

Here's the post I found : https://www.odoo.com/es_ES/forum/ayuda-1/question/v12-restore-deleted-superadmin-user-154213

But I don't know how to fix the problem.

Thanks

PS : Sorry about my English, it's not my native language.