Introduction
Every HubSpot Content Hub developer and marketer eventually hits the same wall: something breaks, the error message is vague, and HubSpot's documentation covers the happy path but not the failure mode you're staring at.
We've been building on HubSpot CMS — now Content Hub — since 2011. Across more than 100,000 pages and 15,000 migrations, our team has hit, diagnosed, and fixed virtually every error this platform can produce. Most of these fixes have lived in our internal documentation and our developers' heads. This post is us finally writing them down.
These are the 15 issues we fix most often, with the exact diagnosis and fix for each. Bookmark this page; if you work on Content Hub regularly, you'll be back.
Most of the issues above are fixable in under an hour once you know where to look. But some situations justify bringing in a specialist: rendering errors across many pages after a Design Manager cleanup, migration-related redirect and canonical issues at scale, or performance problems rooted in theme architecture.
We've spent 15 years inside HubSpot's CMS — debugging, migrating, and rebuilding. If you're stuck on something this post didn't cover, or you'd rather hand the whole thing to a team that's seen it before, we offer technical audits and fixed-scope rescue work for exactly these situations.
Talk to us — the first 30 minutes are free, and there's a good chance we've fixed your exact error before.