Bubble.io Debugging: How to Find and Fix Any Problem in Your App
The four debugging tools, a four-step systematic methodology, and a reference table of the most common bugs and their exact fixes — the guide that turns frustrating debugging sessions into systematic problem-solving.
How to Diagnose Problems in Bubble Systematically
Every Bubble builder encounters moments where the app does not behave as expected. The workflow that should fire does not. The repeating group that should show data shows nothing. Debugging is a skill that separates experienced builders from frustrated ones. This guide covers every debugging tool Bubble provides and the systematic approach that finds the problem every time.
The Tools That Solve 95% of Bubble Problems
The Step-by-Step Debugger
Enable the debugger (bug icon), click ‘Step-by-step’ when the workflow runs. Inspect the actual value of every condition and step result as it executes. The single most powerful debugging tool available. Use this before spending 20 minutes guessing.
The Inspector
Hover over any element in preview mode to see its exact data value, conditions, and visibility state. Shows exactly what Bubble is computing for each element. Invaluable for data display bugs where an element shows the wrong value.
Server Logs
Accessible in the Bubble dashboard under Logs. Shows every backend workflow execution with timestamps, step results, and errors. Check here for webhook failures, scheduled workflow issues, and API errors.
The Data Tab Viewer
Data → App data lets you view every record in every data type directly. Use this to confirm that a record was actually created, that a field has the expected value, and that workflow database operations completed correctly.
A Systematic Approach
A bug you cannot reproduce consistently is a bug you cannot fix reliably. Confirm you can reproduce it every time by following the same steps. If it only happens sometimes, identify the conditions that trigger vs. do not trigger it.
| Problem Type | Check First |
|---|---|
| RG shows no data | Privacy rules blocking? Remove all constraints and test. Temporarily set all fields to Everyone. |
| Workflow not firing | Is there an Only when condition evaluating to false? |
| API call failing | Is the API key marked Private? Has the call been initialized? |
| Condition never true | Open the Inspector. Check what value the condition is actually evaluating. |
Enable the debugger and run the problem workflow in step-by-step mode. Inspect the actual value of every condition at every step. The step that produces an unexpected value is where the problem lives.
Once you know which step is wrong and why, fix just that step. Test that the fix resolves the problem without breaking adjacent functionality. Document the bug and fix — this pattern will appear again.
The Problems Every Builder Encounters
| Bug | Cause | Fix |
|---|---|---|
| Repeating group shows no data | Privacy rules blocking OR constraints too restrictive | Remove constraints one by one; check privacy rules |
| Workflow fires but does nothing | Only when condition on a step evaluates to false | Step-by-step debug: inspect condition value at failing step |
| Custom state resets | State is on an element that hides and reappears | Move state to the Page element |
| Count always zero | Privacy rules block the search used in the count | Check privacy rules; test same search in Data viewer as test user |
| Webhook not receiving events | Webhook URL points to /version-test or wrong URL | Update webhook URL in Stripe dashboard to production URL |
Log Every Bug You Fix
Write down each problem, cause, and fix in a personal reference document. Bubble bugs are surprisingly repetitive across different apps. The same patterns appear again and again. A personal bug log saves hours across projects.
Build Your Bubble.io App With Expert Help
a Bubble.io development team. Multi-tenant SaaS architecture, Stripe billing, and full product builds done right from day one.