Fix: AWS CloudWatch Logs Not Appearing
How to fix AWS CloudWatch logs not showing up — IAM permissions missing, log group not created, log stream issues, CloudWatch agent misconfiguration, and Lambda log delivery delays.
All Articles
836 articles — Page 44 of 70
Fix: CSS Custom Properties (Variables) Not Working or Not Updating
How to fix CSS custom properties not applying — wrong scope, missing fallback values, JavaScript not setting variables on the right element, and how CSS variables interact with media queries and Shadow DOM.
Fix: Spring Boot "The dependencies of some of the beans in the application context form a cycle"
How to fix Spring Boot circular dependency errors — BeanCurrentlyInCreationException, refactoring to break cycles, @Lazy injection, setter injection, and @PostConstruct patterns.
Fix: Spring Security Returning 403 Forbidden Unexpectedly
How to fix Spring Security 403 Forbidden errors — CSRF token missing, incorrect security configuration, method security blocking requests, and how to debug the Spring Security filter chain.
Fix: Kubernetes ConfigMap Changes Not Reflected in Running Pods
How to fix Kubernetes ConfigMap updates not reaching running pods — why pods don't see updated values, how to trigger restarts, use live volume mounts, and automate ConfigMap rollouts with Reloader.
Fix: MongoDB "not primary" Write Error (Replica Set)
How to fix MongoDB 'not primary' errors when writing to a replica set — read preference misconfiguration, connecting to a secondary, replica set elections, and write concern settings.
Fix: Certbot Certificate Renewal Failed (Let's Encrypt)
How to fix Certbot certificate renewal failures — domain validation errors, port 80 blocked, nginx config issues, permissions, and automating renewals with systemd or cron.
Fix: Node.js Crashing with UnhandledPromiseRejection (--unhandled-rejections)
How to fix Node.js UnhandledPromiseRejectionWarning and process crashes — why unhandled promise rejections crash Node.js 15+, how to add global handlers, find the source of the rejection, and fix async error handling.
Fix: Poetry Dependency Conflict (SolverProblemError / No Solution Found)
How to fix Poetry dependency resolution errors — SolverProblemError when adding packages, conflicting version constraints, how to diagnose dependency trees, and workarounds for incompatible packages.
Fix: Python venv Using Wrong Python Version
How to fix Python virtual environments using the wrong Python version — venv picking system Python instead of pyenv, specifying the interpreter path, and verifying the active environment.
Fix: AWS ECR Authentication Failed (docker login and push Errors)
How to fix AWS ECR authentication errors — no basic auth credentials, token expired, permission denied on push, and how to authenticate correctly from CI/CD pipelines and local development.
Fix: Django Migration Conflict (Conflicting Migrations Cannot Be Applied)
How to fix Django migration conflicts — why multiple leaf migrations conflict, how to merge conflicting migrations, resolve dependency chains, and set up a team workflow to prevent migration conflicts.