pnpm not supported during installation + 404 error when importing Button component

[muhammadiqbalid43]

Description

When I install Next.js using pnpm, the installation works fine.
However, when I install fydemy/ui, the package manager cannot detect pnpm (only allows npm).
Additionally, when I import the Button component, it causes a 404 error, and even after deleting the component import.

Environment

OS: elementary OS 7.1 Horus
Node.js version: v22.12.0
pnpm version: 10.15.0
Next.js version: 16.0.1
Package: fydemy/ui 0.1.1