Odoo POS receipt error - odoo

Question

I'm using Odoo v11 in windows localhost and I'm still beginner.
Recently, i tried to edit posticket and suddenly, the point of sale module stops loading it keep blank page.
I have cleared cache for browser and restart odoo service, it worked.
But, the receipt not showing and error message appears as showing below:
Uncaught TypeError: Cannot read property 'vat_label' of null
http://localhost:8069/point_of_sale/static/src/js/models.js:2121
Traceback:
TypeError: Cannot read property 'vat_label' of null
at child.export_for_printing
(http://localhost:8069/point_of_sale/static/src/js/models.js:2121:44)
at Class.get_receipt_render_env
(http://localhost:8069/point_of_sale/static/src/js/screens.js:1538:28)
at Class.render_receipt
(http://localhost:8069/point_of_sale/static/src/js/screens.js:1616:77)
at Class.show
(http://localhost:8069/point_of_sale/static/src/js/screens.js:1505:14)
at Class.prototype.(anonymous function) [as show]
(http://localhost:8069/web/static/src/js/core/class.js:90:38)
at Class.show_screen
(http://localhost:8069/point_of_sale/static/src/js/gui.js:116:33)
at Class.finalize_validation
(http://localhost:8069/point_of_sale/static/src/js/screens.js:2071:22)
at Class.validate_order [as _super]
(http://localhost:8069/point_of_sale/static/src/js/screens.js:2080:18)
at Class.validate_order
(http://localhost:8069/pos_mercury/static/src/js/pos_mercury.js:687:14)
at Class.validate_order
(http://localhost:8069/web/static/src/js/core/class.js:123:38)
Edit :
I have removed all HTML codes i inserted to posticket, now it only working when i activate developer mode with assets. When deactivate and try generate pos sale receipt it gives this error:
Uncaught TypeError: Cannot read property 'vat_label' of null
http://localhost:4883/web/content/2266-abace1e/point_of_sale.assets.js:197
Traceback:
TypeError: Cannot read property 'vat_label' of null
at child.export_for_printing (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:197:863)
at Class.get_receipt_render_env (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:379:1110)
at Class.render_receipt (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:379:2226)
at Class.show (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:379:409)
at Class.prototype.(anonymous function) [as show]
(http://localhost:4883/web/content/2189-
2963aaa/web.assets_common.js:3816:488)
at Class.show_screen (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:314:48)
at Class.finalize_validation (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:400:1111)
at Class.validate_order [as _super] (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:400:1226)
at Class.validate_order (http://localhost:4883/web/content/2266-
abace1e/point_of_sale.assets.js:448:6)
at Class.validate_order (http://localhost:4883/web/content/2189-
2963aaa/web.assets_common.js:3819:371)
I really appreciate your help and support.
Regards,

Answer 1

It turns out that <t t-esc="widget.pos.company.name"/> in posticket is returning that invalid values from modles.js at vat_label: company.country.vat_label,.
Unfortunately, I have removed those two lines and everything works fine now.
I keep investigating on this and i will keep you updated.
Thanks for your support and assistance.
Regards,
Mhdbtashi

Answer 2

It happened to me last night after I delete country data from my company in the settings page. But when I put my country back to my company set-up. it works again. Not sure if this can help. I'm a non-tech person.

Answer 3

this error is related to the country and the field called Tax IVA name, and your company need established by default some country.