Shopify developers face unique challenges when debugging Liquid templates. Unlike client-side JavaScript, Liquid runs server-side with no breakpoints, console logs, or error stacks. This makes troubleshooting a trial-and-error process.

Common issues include silent failures, undefined object errors, and malformed JSON outputs. Developers often see blank pages or cryptic messages like "undefined method for nil:NilClass" without clear line references.

Effective debugging combines several approaches. The JSON filter helps inspect object data, while Shopify's Theme Check linter catches syntax issues pre-deploy. Browser DevTools work for JavaScript-exposed data, but not Liquid internals.

For comprehensive debugging, tools like Shopify Theme Devtools provide live object inspection and expression testing. These browser-based panels show real-time cart states, template data, and Liquid object trees with 50+ filter simulations.