Fix: setState() or markNeedsBuild() called during build in Flutter
This error means you mutated state while Flutter was building. Move the setState out of build, or defer it with addPostFrameCallback. Here is why it happens and the right fix.
Tag: errors
48 posts · Page 2 of 5
Fix: MCP Servers Stopped Working After a Claude Desktop Update on Windows
After an MSIX update, Claude Desktop on Windows reads claude_desktop_config.json from a virtualized path while Edit Config opens the old %APPDATA% one. Edit the file under AppData\Local\Packages\Claude_pzs8sxrjxfjjc and restart.
Fix: GitHub MCP server tool calls fail silently when the PAT isn't passed
GitHub MCP tools show up but every call returns empty or 'Bad credentials'? The token is unset. Put the PAT in the env block, verify with curl, done.
Fix: "Claude reached its tool-use limit for this turn"
This banner is a pause, not a failure. It maps to the API's pause_turn stop reason (default 10 server-tool iterations). Click Continue, or in code re-send the assistant response. Full fix here.
Fix: Extra Inputs Are Not Permitted on a Tool Call With a Structured Argument
Your agent's tool call fails with Pydantic's 'Extra inputs are not permitted'. The model added a field your structured argument forbids. Turn on strict tool use so the grammar blocks it, relax the validator, or recover in the loop.
Fix: Cursor's Apply Button Does Nothing on a Large Diff
Cursor's Apply silently cancels on big files because the Fast Apply model has an implicit size ceiling. Shrink the edit scope, clean git state, or fall back to a unified diff. Six ranked fixes for Cursor 3.3.
Fix: AndroidX conflict during Flutter Android build
The fix in 30 seconds: set android.useAndroidX=true and android.enableJetifier=true in android/gradle.properties, then find any plugin still on the old support library and upgrade or replace it.
Fix: Flutter background_fetch plugin requires minSdkVersion 21
The fix in 30 seconds: set minSdkVersion to 21 (or higher) in android/app/build.gradle. background_fetch is built on Android's JobScheduler, which only exists from API 21.
Fix: framework_version=6.0.0 was not found when launching a .NET 6 binary
The .NET 6 runtime is gone or mismatched. Either install net6.0 again, roll forward to net8.0 via runtimeconfig, retarget the csproj, or ship self-contained.
Fix: rate_limit_error on Claude Sonnet 4.6 in a Long Agent Loop
A 429 rate_limit_error on claude-sonnet-4-6 in a long agent loop is almost always ITPM, not RPM. Read retry-after, cache the system prompt, and gate on anthropic-ratelimit-input-tokens-remaining. Step-by-step fix with code.