Start Debugging

Tag: errors

127 posts · Page 1 of 13

2026-08-31 errors flutter android

Fix: Firebase Auth sign-in does not persist in a Flutter Android release build

Firebase Auth restores the Android session from a private SharedPreferences file with no network call, so a release-only sign-out is never broken persistence. It is a different google-services.json, a rejected token refresh, App Check, or your own catch block.

2026-08-31 errors flutter dart

Fix: The method 'getInvocation' isn't defined for the type 'DartObjectImpl'

build_runner fails to compile because source_gen 3.1.0 or 4.0.0 calls an analyzer API removed in analyzer 8.4.0. Upgrade the generator that pins source_gen below 4.0.1.

2026-08-30 errors ef-core ef-core-11

Fix: 23505: duplicate key value violates unique constraint on a concurrent EF Core insert

The check-then-insert in your handler is not atomic. Catch PostgresException with SqlState 23505, or collapse the whole thing into one INSERT ... ON CONFLICT statement. EnableRetryOnFailure will not help.

2026-08-30 errors ef-core ef-core-11

Fix: CREATE DATABASE permission denied in database 'master' when running dotnet ef database update

EF Core's Migrate() always checks whether the database exists and creates it if not, from a hardcoded master connection. Grant CREATE ANY DATABASE, fix the login's access to the existing database, or ship an idempotent SQL script instead.

2026-08-30 errors ef-core maui

Fix: Model building is not supported when publishing with NativeAOT in a .NET MAUI iOS build

iOS builds set DynamicCodeSupport=false, so EF Core refuses to build the model even though you never enabled NativeAOT. Ship a compiled model plus precompiled queries, or turn the interpreter back on.

2026-08-29 errors dotnet csharp

Fix: CA1070 "Do not declare event fields as virtual"

CA1070 fires on virtual field-like events. Drop the virtual, keep the event non-virtual, and let derived classes override a protected virtual OnXxx raiser instead.

2026-08-29 errors maui dotnet

Fix: Doesn't support required ABI when installing a .NET MAUI Android app

The APK has no native library for the device's CPU. Since .NET 9 the default Android RuntimeIdentifiers are 64-bit only, so the fix is to set RuntimeIdentifiers explicitly. Covers ADB0020, XA0036, NETSDK1083, the ABI to RID mapping, the Play Console wording, and why the four-RID snippet everyone copies breaks on .NET 11.

2026-08-29 errors dotnet docker

Fix: failed to resolve source metadata for mcr.microsoft.com/dotnet/aspnet

BuildKit cannot read the manifest for your base image. Check the tag exists, repair the Docker credential helper, open both MCR endpoints, then pre-pull for offline builds.

2026-08-29 mcp claude-code github-copilot

Fix: An MCP Server Never Starts Because an Enterprise Allowlist Blocks Its Command or URL

A server that vanished from /mcp with no error is almost always an allowlist. Run claude mcp add on the same server: the add path prints the reason the load path swallows.

2026-08-28 mcp ai-agents dotnet

Fix: MCP9004, MCP9005 and MCP9006 warnings after upgrading the MCP C# SDK to 2.0

MCP9005 is advisory, but MCP9004 crashes at startup and stateless mode makes SampleAsync throw. Here is what each diagnostic means and how to fix it properly.