To resolve this error, you need to manually add the package through the Unity Package Manager. Follow these steps:
In older versions of Unity, the Sprite Editor was built directly into the engine. Starting with the shift, Unity decoupled these tools. To resolve this error, you need to manually
: Breaking a "Sprite Sheet" (one big image with many characters/items) into individual usable assets. : Breaking a "Sprite Sheet" (one big image
: If you started your project using the "3D" template instead of "2D," Unity assumes you don't need sprite tools and leaves them out. Click Apply at the bottom
In the , change Texture Type to Sprite (2D and UI) . Click Apply at the bottom. 2. Update the 2D Core
The Sprite Editor will not open if your image is set to "Default." Select your image in the window.