When starting Next.js, the current directory is a different casing than the actual directory on your filesystem. This can cause files to resolve inconsistently.

This can occur when using a case-insensitive filesystem. For example, opening PowerShell on Windows navigating to cd path/to/myproject instead of cd path/to/MyProject.

Ensure the casing for the current working directory matches the actual case of the real directory. Use a terminal that enforces case-sensitivity.

• Next.js CLI documentation
• Case sensitivity in filesystems