Back to Diagnostic WorkbenchCatalog Index: 33 Verified Runbooks
Programmatic SRE Knowledge Base
Canonical Incident Runbooks & Error Directory
Curated, zero-fluff resolutions for high-frequency runtime crashes and compiler errors. Search by literal error string, framework, or filter by engineering category.
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Showing 33 of 33 runbooks
Next.js & React
9 runbooksNext.js 15
Next.js 15: Cannot find module '@vercel/turbopack-binding'turbopack-binding
React 19
React 19 / Next.js 15: Hydration failed because initial UI does not match server HTMLhydration failed
Next.js 15
Next.js 15: Failed to find Server Action (Invalid Action Token)failed to find server action
Next.js 15
Next.js 15: Dynamic server usage: headers/cookies were accessed in a page configured for static renderingdynamic server usage
Next.js 15
Next.js 15: Route params should be awaited before using its propertiesparams should be awaited
React 19 / Next.js
Next.js / React: Event handlers cannot be passed to Client Component props without "use client"event handlers cannot be passed to client component props
Tailwind CSS v4
Tailwind CSS v4: Unknown at-rule @tailwind or @apply without CSS importunknown at-rule @tailwind
Tailwind CSS v4
Tailwind CSS v4: Use @tailwindcss/postcss instead of tailwindcss in PostCSS configurationtrying to use `tailwindcss` directly as a postcss plugin
TypeScript 5
TypeScript: Cannot find module "@/..." or its corresponding type declarationsts2307
Database & Storage
7 runbooksPostgreSQL / Neon
Neon Postgres: Serverless Connection Pool Starvation & Timeoutneon.tech:5432
PgBouncer / PostgreSQL
PostgreSQL / PgBouncer: Prepared statement "s0" already exists or does not existprepared statement "s0" already exists
PostgreSQL
PostgreSQL: Error: self-signed certificate in certificate chain (SSL Mode)self-signed certificate in certificate chain
Supabase / PostgreSQL
Supabase: new row violates row-level security policy for table (42501)violates row-level security policy
Prisma ORM
Prisma: Query engine library for current platform does not existquery engine library for current platform
Redis
[ioredis] Unhandled error event: ReplyError: OOM command not allowed when used memory > 'maxmemory'.[ioredis] Unhandled error event: ReplyError: OOM command not allowed when used m
PostgreSQL / Neon
Neon: Max client connections reached (too many clients)remaining connection slots are reserved
Node.js & Runtime
10 runbooksNode.js / Express
Node.js: Error: listen EADDRINUSE: address already in use :::3000eaddrinuse
V8 / Node.js
Node.js: FATAL ERROR: Ineffective mark-compacts near heap limit (JavaScript heap out of memory)heap out of memory
Node.js ESM
Node.js: ReferenceError: require is not defined in ES module scoperequire is not defined in es module scope
Node.js / TypeScript
Node.js: Error [ERR_MODULE_NOT_FOUND]: Cannot find module without file extension in Node ESMerr_module_not_found
npm / pnpm
npm: npm ERR! code ERESOLVE unable to resolve dependency treecode eresolve
Bun Runtime
Bun: Native Node-API C++ addon failed to load in Bun runtimenative node-api addon failed to initialize
Python / FastAPI
Python / FastAPI: RuntimeWarning: coroutine '...' was never awaitedwas never awaited
Python / Pydantic v2
Pydantic v2: pydantic_core.ValidationError: 1 validation error for Modelpydantic_core._pydantic_core.validationerror
Git SCM
Git: You are in 'detached HEAD' state and cannot mergedetached head state
Runtime
goroutine 1 [chan receive]:goroutine 1 [chan receive]:
Docker & Systems
4 runbooksDocker Engine
Docker: Bind for 0.0.0.0:8080 failed: port is already allocatedport is already allocated
Docker / Kubernetes
Docker / Kubernetes: Container killed with exit code 137 (OOMKilled)oomkilled
Docker / Linux
Docker: exec /usr/local/bin/docker-entrypoint.sh: exec format errorexec format error
Rust / Cargo
Rust: error[E0463]: can't find crate for core (wasm32-unknown-unknown target not installed)can't find crate for `core`
Network & Security
3 runbooksCloudflare Workers
Cloudflare Workers: Script size exceeds worker limit (1MB uncompressed / 10MB)exceeds the maximum size allowed for free/standard plan workers
HTTP / Fetch
Web API: Access to fetch has been blocked by CORS policy: No Access-Control-Allow-Origin header is presentblocked by cors policy
Stripe SDK / Webhooks
Stripe: StripeSignatureVerificationError: Timestamp outside the tolerance zonetimestamp outside the tolerance zone
Generative Engine Optimized (GEO) & Schema.org Verified
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