Software troubleshooting desk

Practical fixes for tool errors, setup blocks, and workflow issues.

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Git 'index.lock' File Exists Error in IntelliJ

If you see an error like fatal: Unable to create 'project/.git/index.lock': File ex...

How to Fix npm ERR! enoent ENOENT: package.json Not Found
If you see npm ERR! enoent ENOENT: no such file or directory, open '.../package.json...

Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fixing Nginx Redirect Loop Configuration Issues
You set up an Nginx redirect but now the browser says the page isn't redirecting properly – y...

Fix 'node sass build failed' During npm install
When running npm install, you might see an error like "node sass build f...

Python Dependency Conflict Checklist: Diagnose & Fix
You're installing a package with pip, and suddenly you see a wall of red text: ERROR: C...


    Issue queue
Sitemap
Git index.lock: Causes and Prevention
How to Resolve Chrome Certificate Error on macOS
Update Git Remote URL Without Deleting Origin
Nginx Cloudflare 521 Troubleshooting Guide
How to Fix Windows 11 Upgrade Stuck at 99%
Chrome Group Policy Certificate Authority Error Fix
How to Set Up Cloudflare SSL Full Strict
Chrome Memory Not Decreasing After Closing Tabs – Fixes
Android Chrome ERR_NAME_NOT_RESOLVED Troubleshooting
Cloudflare DNS Not Updating? Fix Stuck Propagation
VS Code Terminal Blank: How to Fix
Windows 11 No Internet but Connected: IPv4 Troubleshooting
Desk note

    Troubleshooting paths
Home
Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities