Checklists for software errors, setup, and tool workflows.

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Latest checklists

If you're running Docker with the devicemapper storage driver and see no s...

Fix Firefox Secure Connection Failed After Update
After a Firefox update, you might see a "Secure Connection Failed" error when visiting we...

Fix Git 'index.lock file exists' Error
When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....

Fix Docker Build Context Canceled Timeout Errors
When running docker build, you might see an error like "context canceled"...

Git Fatal: Refusing to Merge Unrelated Histories – Workaround
You try to merge two Git branches and get this error:
fatal: refusing to merge unre...

Fixing node-sass Build Failures on macOS
You run npm install and hit a wall: node-sass fails to compile native modules on mac...