"Fixed it," says Antigravity. The error is still there.
If you've been using Antigravity for any length of time, this scenario will feel familiar. The AI confidently reports a successful fix, but the red squiggles in your editor don't move. When I first ran into this, I genuinely thought something was broken with the tool. It wasn't. There are predictable reasons this happens, and once you recognize the patterns, debugging becomes far less stressful.
Understanding What "Fixed" Actually Means to Antigravity
Before diving into diagnostics, it helps to understand what's happening under the hood when Antigravity modifies your code.
Antigravity performs a file write operation. It doesn't automatically verify whether that change resolves the error — unless you've explicitly asked it to run a build command, type check, or test suite to confirm. So when Antigravity says "I've fixed the issue," the accurate interpretation is "I've made an edit to the file." It does not mean "I compiled the project and confirmed the error is gone."
This isn't a flaw in how Antigravity works — it's just the nature of how AI-assisted editing operates. The model generates a fix based on its understanding of the error and the code, applies the change, and reports completion. Verification is a separate step that either you or an explicit build/test command needs to perform.
Keeping that distinction in mind is the foundation for all five causes below.
1. Stale Cache Still Holding Onto the Old State
This is the most common culprit, and the first thing worth checking before any deeper investigation.
TypeScript projects, Python virtual environments, and most modern build tools cache aggressively. Even if Antigravity made a perfectly correct edit, your editor or build tool might still be reading from a cached version of the previous compiled state — making the error appear to persist when it no longer exists in your actual source code.
# TypeScript — restart the language server
# Open Command Palette (Cmd/Ctrl + Shift + P) and run:
# > TypeScript: Restart TS Server
# Next.js — clear the build cache and trigger a fresh build
rm -rf .next && npm run build
# Python — remove bytecode caches that may hold outdated module references
find . -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null
find . -name "*.pyc" -delete 2>/dev/nullMaking "cache clear after AI fix" a reflex saves a surprising amount of debugging time. It takes five seconds and resolves more cases than you'd expect. I've started treating it the same way I treat turning things off and on again — slightly embarrassing to need, but reliably effective.
2. Antigravity Modified the Wrong File
If your project has multiple files with similar names — say, both src/utils.ts and lib/utils.ts exist — Antigravity may have edited one while the error lives in the other. This happens often in monorepos and projects with layered directory structures, where the same utility functions are duplicated or the same component exists in multiple packages.
The fastest verification is through git:
# See what files were actually modified
git diff --name-only
# Review the specific content of the changes
git diffIf the file you expected to be fixed isn't in the diff, the edit landed somewhere else. Re-ask with an explicit file path:
# Vague (leaves room for Antigravity to target the wrong file)
"Fix the error in the Profile component."
# Precise (removes any ambiguity about where the fix should go)
"Fix the following error in src/components/Profile.tsx, line 24:
TS2322: Type 'string | undefined' is not assignable to type 'string'."
Including the file path and line number gives Antigravity everything it needs to target the exact location. This simple habit significantly reduces misplaced edits in larger projects where similar names appear across multiple directories.
3. The Fix Targeted a Different Type of Error
TypeScript and many other environments surface multiple distinct categories of errors at the same time. Antigravity may have addressed one category while the error you're looking at belongs to an entirely different one — leaving it untouched.
The three main types to know:
- Type errors: Caught by the TypeScript compiler (
tsc) during static analysis - Runtime errors: Only surface when the code actually runs — the build passes but the application crashes or behaves incorrectly
- Linter errors: Reported by ESLint, Biome, or similar tools based on code style rules and best-practice patterns
These are independent problems. Asking Antigravity to "fix the error in the Profile component" without specifying which error means it has to infer the target — and it may prioritize a lint warning when you're staring at a type error.
Always paste the full error output:
# Get the complete TypeScript type-check output
npx tsc --noEmit 2>&1
# Get ESLint diagnostics for a specific file
npx eslint src/components/Profile.tsx
# For Python, run the linter directly
pylint src/module.py
# or
ruff check src/Pasting the raw error text — rather than paraphrasing or summarizing it — gives Antigravity an unambiguous target. This single habit resolves a large percentage of "it changed something but not the right thing" situations.
4. The Language Server Hasn't Caught Up Yet
Sometimes the fix is already in the file, but your editor's language server is still displaying the old diagnostic. This is a display lag issue, not a real error — the source of truth (your saved file) is already correct, but the tool reporting problems hasn't re-analyzed it yet.
This is especially common after rapid sequential edits, which is exactly what happens when Antigravity modifies several files in quick succession during a single fix. The language server runs continuously in the background, and it occasionally falls behind.
Restarting it is quick and reliable. From the Command Palette (Cmd/Ctrl + Shift + P):
# TypeScript language server restart
> TypeScript: Restart TS Server
# Python language server restart (Pylance extension)
> Python: Restart Language Server
# Reload the entire editor window — the most thorough option
> Developer: Reload Window
A full window reload takes only a few seconds. If the error disappears after reloading without any other changes, the fix was already successful — only the display hadn't updated. This makes it a useful early step in the diagnostic process: quick to do, and if it works, you've saved yourself from chasing a problem that doesn't exist in the code anymore.
5. Antigravity's Context Contains an Outdated View of Your Files
In longer sessions — particularly after many files have been edited — Antigravity's internal picture of your codebase can drift from the actual current state of your files. When this happens, a fix request generates changes based on what the file looked like earlier in the session, not its current content. The fix can look plausible from Antigravity's perspective while not actually addressing the real issue, or even introducing new inconsistencies.
The reliable solution is to start a fresh chat session and explicitly ask Antigravity to read the current file before making changes:
"Please read src/components/Profile.tsx first, then fix this specific error:
[paste the full error message here]"
The phrase "read the file first" is meaningful here. It tells Antigravity to fetch the current file content before reasoning about a fix, rather than relying on whatever state it has cached from the earlier conversation. When sessions get long and fixes start feeling inconsistent or circular, resetting context is often the fastest path back to reliable behavior.
The order I follow when an error persists: cache clear, then confirm the right file was changed with git diff, then verify I described the right type of error, then restart the language server, and if nothing has worked yet, open a fresh session with an explicit file read. The whole sequence takes under three minutes and resolves almost everything I encounter.
Start with the cache clear. It requires no investigation, takes five seconds, and fixes more problems than its simplicity would suggest.