Odoo issue with online signature drawing area -- 4

Job ID: 34220193

Budget: €8 – €30 EUR

I have Odoo 15 Community. Few days ago i enabled the native option on Settings "Online signaure" to enable the option to sign the sales butgets drawing manually.
but now, when i click on Accept and Sign, (Aceptar y firmar) don't appears the signature drawing area.

Seems perhaps a javascript issue? the url of the order is attached
Related categories: JavaScript Odoo