Hi , 

An error was compair after install in V16 the modules/16.0/digital_signature

When i try to go in Purchase

Uncaught Promise > Missing field string information for the field 'show_signature' from the 'purchase.order' model

Error: Missing field string information for the field 'show_signature' from the 'purchase.order' model
    at https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6777:258
    at traverse (https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6772:200)
    at https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6772:242
    at Function. (https://dev3.smile.ua/web/assets/8121-0b1925a/web.assets_common.min.js:63:404)
    at traverse (https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6772:211)
    at https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6772:242
    at Function. (https://dev3.smile.ua/web/assets/8121-0b1925a/web.assets_common.min.js:63:404)
    at traverse (https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6772:211)
    at https://dev3.smile.ua/web/assets/9643421-e34fc09/web.assets_backend.min.js:6772:242
    at Function. (https://dev3.smile.ua/web/assets/8121-0b1925a/web.assets_common.min.js:63:404)

With uninstall module doesnt resolv the issue.

I need support.

Thank you.