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2026

Playwright networkidle timeout? The 401 silent refresh loop
Airflow trigger no dag_run_id? duplicate logical_date 409
Airflow DAG gone but metadata stays? Delete order matters
Airflow 3 password reset not working? It reads a JSON file
Model Changed but Column Missing? 3 Alembic Pitfalls
Claude Code Hooks Overblocking? Gate on Real SQL Writes
cPanel Domain Log 0 Bytes After Rotation? Reload Apache
.env Edits Do Nothing? DB Config Overrides Env Variables
Duplicate hreflang in Docusaurus? Built-in i18n emits them
Packaged Electron App Can't Read .env? It Lives in userData
process.env Not Propagating? It's the ESM Import Cache
FastAPI 422 or useParams Undefined? 4 Contract Mismatches
Hysteria Authenticates but Times Out? UDP Path QoS Diagnosis
json.dumps fails on NaN? The error escapes your try/except
PostgreSQL fe_sendauth in Docker? exec trust vs TCP auth
jsonb IS NOT NULL passes for JSON null? Use jsonb_typeof
Vite Env Variable Undefined? It Needs the VITE_ Prefix
Vite Proxy Works in Dev but 404 in Production? Add Nginx
LLM Tool Calls Fail Silently? Enum Drift and Prompt Bloat
vaul Drawer Won't Close or Scroll? Overflow Blocks the Drag
WeChat Promise Wrapper Resolves [object Object]? Take .data
GitHub Actions deploy false failure? pm2 restart race
Cannot access before initialization in ESM? Implicit globals
AlmaLinux 10 + cPanel: New-Server Pitfalls from TFA to DNS
cPanel Restore Shows Default Page? Aliyun ECS NAT IP Fix
cPanel AutoSSL Not Issuing? Self-Signed Certificate Fix
cPanel Install Says Complete but MariaDB Is Missing
Go Fyne Desktop Pitfalls: JSON Shadowing & SSH Fingerprints
When Should You Stop a 1688 Ad Campaign? Run Five Checks First
Rank Crowds by Cost or ROI? Same Cost, 4× Apart in ROI
78% of Keywords Never Produced an Inquiry: Your Cost per Inquiry Is Understated 28%
4,111 Leads vs 824 Inquiries: Two Acquisition Costs in One B2B Ad Ledger
One Week at ROI 61.6, Eight Weeks Under 2: How a Lucky Order Ruins Ad Judgment
Is 16 Days Enough for Marketplace Ad Data? We Re-Collected 5 Weeks to Find Out
Same Product, 4× the Inquiry Cost: It's the Ad Solution, Not the Product
A Real Store-Wide Efficiency Alert, From a 40-Week Ledger
Claude Code Not Responding in VS Code? The GLM Multi-Session Rejection Pitfall
Life Enters Limited Beta: A Money & Mood Journal You Just Talk To
Clicking One Row Highlights Many in Ant Design Table? Your rowKey Isn't Unique
DeepSeek/Qwen Structured Calls Succeed but Return Empty? Disable Thinking Before It Burns Your Token Budget
Docker Volume Mounted but Empty? etcd Data Lived in the Writable Layer, Lost on Recreate
Container Logs Filling Your Server Disk? docker system df 'Reclaimable' Lies
Old Browser Extension Stops Syncing Mid-Month? Version Skew from a Re-purposed Sync Flag
Every LLM Batch Validation Falls Back? The All-or-Nothing Trap in Capacity Gates
npm audit Findings Attributed to the Wrong Directory? Match Package Trees by audited N
Data Pipeline Snapshot Slots Misaligned? Empty Segments Collapse Positions
Monitor Missed 38 Log Lines? Python's WARNING Is Not the Contract's warn
Metrics Inflated 20x After SQL Aggregation? Never SUM Ratio Columns
Row Exists in the Detail Query but Not the Summary? Cross-Query Predicate Granularity Mismatch
PostgreSQL migration left orphan empty tables behind? Audit schema leftovers with information_schema
Python json.dumps with default=str turns a set into a string? The hidden substring-match trap
Airflow dagRun Trigger Fails Silently? The logical_date Unique Constraint
Airflow DAG Still in the List After Deletion? Metadata Not Cleaned + Correct Order
Airflow XCom Throws 'Out of range float values are not JSON compliant'? Blame pandas NaN
systemctl Shows inactive But the Process Is Running? Bare-Process Health Check False Negative
Zod Validation of LLM Output Failing Silently? Drop the .strict()
JavaScript throw; is a SyntaxError? JS has no bare rethrow — you must throw e
Milvus: invalid collection name? The name must start with a letter or underscore — never concat a UUID
PostgreSQL ON CONFLICT: there is no unique constraint? Sync INSERTs after changing the unique key
Airflow PostgresHook Multi-Statement SQL Silently Drops Results? Split by Semicolon and Execute One by One
dotenv truncates .env values at #? Quote and force-refresh
Docker Compose service won't come back after restart? Check the restart policy
Docusaurus scripts Build Fails with inline Script? Only src Is Accepted, Not content
Python task marked failed but no error? try/except swallowed the exception
Node.js AsyncLocalStorage Returns undefined in a Callback? EventEmitter Escapes Its Context
Node.js AsyncLocalStorage Reads the Wrong Value Under Concurrency? Replace enterWith with run
Chrome Extension chrome.alarms Fires at the Wrong Interval? MV3 Enforces a ~1 Minute Minimum
Node.js require('nanoid') Throws ERR_REQUIRE_ESM? Alternatives After v5 Went ESM-Only
VSCode WSL Extension 'Failed to Fetch'? VSIX Download Saved as Gzip Instead of Zip
WordPress REST API Image Upload Returns 405? Check Your Hostinger CDN
Node.js fetch ignores proxy env vars? undici doesn't read http_proxy
Disk 93%, CPU 160% on a 2-Core Server? Three Docker Resource Black Holes Explained
JWT_SECRET is undefined? Node.js Import Chain Execution Order vs dotenv
Puppeteer Blocked by Anti-Bot? From Chrome CDP to Electron Alternative
Vercel Serverless Function Multi-Level Route 404? Bypass the Catch-All Trap with Rewrites
Chrome Extension Messages Leaking? postMessage targetOrigin Wildcard Exposes Data to Third-Party Iframes
UPSERT Writes All Zeros? Drizzle sql Template Pitfall with Parameterized Values vs SQL Expressions
JWT Signing Silently Fails? Check Your Node.js Environment Variable Loading Order
Chrome Extension Collecting Empty Data? Same-Site Cookies with Different Formats Break ID Mapping
Node.js ESM Dynamic Import Can't Find Module? Check the File Extension
Chrome Extension Processing Messages Twice After Hot Reload? WXT HMR Stacks Listeners
Chrome Extension Writing Test Data to Production? Add a DRY-RUN Switch
Chrome Extension Service Worker Can't Read Login Token? Cross-Context Token Sync
Two WSL2 + Docker Networking Pitfalls: Silently Occupied Ports & Host Mode localhost Unreachable
Container Port Unreachable from WSL2? The Docker Desktop network_mode:host Trap
WordPress Block Theme Changes Not Taking Effect? FSE Development Troubleshooting Guide
WooCommerce Blocks Showing core/missing After Upgrade? Block Theme Troubleshooting Guide
Embedding a Timeline in SITE123 Event Pages? First Dodge These 5 Platform Limits
Docker Container Can't See Host Files? Anonymous Volume Overrides Bind Mount
Theme JS Broken After Disabling a Plugin? Check Query Monitor's Footer Scripts Callback
Fix WSL2 Cannot Access Windows Host Proxy — Three Invisible Pitfalls
Fixing 4 CSS Conflicts Between WooCommerce and FSE Block Themes
Save 70% of Your AI Coding Plan Quota by Replacing ZhiPu Search with Tavily MCP
Fix FSE Block Theme Style Preview Single Color Block and Front Page Blank Canvas
Build a Custom MCP Toolkit with Python FastMCP to Connect Any AI Model
Fix Hover Selector Penetration in Nested FSE Group Blocks
Fix CSS ::before Pseudo-element Decorative Patterns Covering Buttons
Fix WooCommerce FSE Cart Block Blank Page and Product Image Collapse
WordPress FSE Block Validation Failed: The Hidden Cause of Missing JSON Quotes
Fix Gutenberg Gradient Class Naming Change Causing Block Validation Failure
Fix FSE Group Block Layout Property Overriding Custom CSS
Fix WordPress FSE Theme Footer Text Visibility - WCAG Contrast Issue
Fix WordPress FSE Pattern Block Validation Errors - 5 Common Causes
Installing WP-CLI in Docker WordPress Container
Unify Multiple Search APIs with Abstract Class, Return Errors Instead of Raising
Full API Mocking with Playwright page.route()
Skip Login in Playwright Tests with Custom Fixtures
Bypass Supabase Auth for Playwright E2E Testing Without Login
Fix React List Key Duplication Causing DOM Errors
Implementing Data Caching in Zustand Store
Align Heading Icons in Docusaurus Docs with Flexbox
Fixing CancelledError When FastAPI SSE Clients Disconnect
Complete Guide to Google Analytics 4 in React SPA
Fix Tailwind Preflight Resetting Docusaurus Breadcrumbs Styles
Fix the Hidden Pitfall of httpx async with client.post()
Fix Pydantic v2 ORM Mode model_config Override Error
Vite Path Alias Configuration - Why You Need Two Configs
Enable VSCode Copilot Agent Mode for Automated Programming
Implementing Cascade Select Dropdowns in React
Three Pitfalls Integrating Supabase Auth with FastAPI
Milvus Hybrid Retrieval: Weighted Fusion Scores vs. Similarity Thresholds
RAG Query Sources Missing the similarity Field
Debugging Frontend Deployment Not Updating on Production
Four Common Pitfalls in Milvus Hybrid Search
Fix jose Library JWT Key Format Error in Node.js v24
Fix Node.js Environment Variables Reading as undefined
Fix Docusaurus i18n Links Losing Language Prefix
Configure Multiple Blog Instances in Docusaurus
Integrate Umami Analytics in Docusaurus
Fix Docusaurus 3.9 Translation File Validation Error
Using require to Import Static Images in Docusaurus
Fix Docusaurus Heading Styles Lost After Adding Tailwind CSS
Configure Tailwind CSS to Precisely Match data-theme Dark Mode
Fixing Docusaurus Build Failure After Node 24 Upgrade
Fixing Docusaurus Logo Size Issue After Rspack Build
Smart Consultation Widget Configuration
RAG Knowledge Base and AI Floating Widget Solution
Floating Widget AI Consultation Data Flow
Claude Prompting Guide
Project Structure
Theme Development Guidelines

Theme Development Guidelines

February 10, 2026 · 3 min read

Tags:

Docusaurus
TailwindCSS
Styling

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