I need a fresh Odoo installation configured from scratch and, more importantly, the Sales module debugged. Right now every time an order is confirmed an error is thrown, blocking the workflow. Here is the scope I have in mind: • Clean install or re-configuration of the current Odoo environment (Linux server, PostgreSQL). • Root-cause analysis of the order confirmation errors in the Sales module. • Fixes applied directly in Python code or through proper functional settings—whichever is best practice—so that orders confirm without crashing and the subsequent delivery and invoicing steps trigger correctly. • Regression tests on at least three sample orders to prove the workflow is stable. • A brief hand-off document outlining what was changed and how to maintain the fix after updates. You’ll have SSH access and administrator credentials on the server. I’m open to suggested plugins or patches, but the delivered instance must stay fully upgrade-compatible with standard Odoo.