What causes the “expected indented block” parse error in GDScript?

A block header ( func , if , for , while , match ) has nothing indented under it, or the indentation mixes tabs and spaces so the parser cannot see the block.

How do I catch this when it only happens for some players?

Capture it automatically from the player's device with the full stack trace, the device and OS, the build, and a breadcrumb trail of what they did. That turns a vague complaint into a specific, reproducible issue you can fix without owning the hardware it happens on.

How to Fix “Expected indented block” Parse Errors in GDScript

Q: How do you fix the “expected indented block” parse error in GDScript?

Put at least one statement (or pass) under every block header and make the whole file use one indentation style — Godot's editor can convert the file in one action.

Quick answer: Put at least one statement (or pass) under every block header and make the whole file use one indentation style — Godot's editor can convert the file in one action.

GDScript is whitespace-structured like Python, and this error means a header promised a block that never came — or came with unreadable indentation. Here are the three variants.

How to fix it

1. Fill empty blocks with pass

A stubbed func on_win(): with nothing under it is a parse error; add pass until the real body exists.

2. Unify tabs vs spaces

Code pasted from the web mixes styles invisibly. Use Edit > Convert Indent to Tabs (or spaces) on the whole file, and enable drawing whitespace to see it.

3. Check the line after the colon

The statement under the header must be exactly one level deeper; a same-level or double-indented line breaks the block.

4. Let the editor warn early

Keep the script editor's warnings visible — indentation issues underline immediately, long before you run the scene.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every Godot error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.

Most of the time the fix is small. Seeing the failure clearly is the part that actually costs you.