Fix Odoo Weight Scale Error

My weight-scale integration in Odoo has been rock-solid until this week. Now, the moment I place an item on the scale Odoo throws a specific error code with a full description. Nothing in the system was recently updated or changed, so the fault seems to sit in the current codebase or the hardware interface. I can provide the complete traceback as soon as you’re ready to dive in.

I need you to trace the problem through the Odoo modules, identify the underlying cause, and supply a clean fix so weights flow correctly back into the POS/Inventory workflow.

Deliverables
• Corrected code or module patch that removes the error
• Short technical note describing the root cause and your solution
• Deployment steps so I can apply the fix on staging and production

You’ll have SSH access to the Ubuntu server plus sample scale data for testing. If Odoo hardware integrations and Python debugging are your comfort zone, let’s get this resolved right away.