Odoo module upgrades, done for you
Your list views broke because <tree> became <list> in Odoo 18
Odoo 18 renamed the <tree> view tag to <list>. Every list view in your module needs updating, or it won't load. Simple, mechanical, and easy to miss one.
Send us the module. We rename them all, install on Odoo 18, and test. Try it live, then $50 to download.
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Common questions
What replaced <tree> in Odoo 18?
The <tree> tag was renamed to <list>. The functionality is the same; the tag name changed.