When using this mod in a build that you want to reproduce with a Create Schematic, the schematic cannot be used and causes a stack trace to be printed by Create with a warning. Specifically this seems ...

Licenses Create Schematics is open source, and is licensed under the MIT License, see the License for more information.

Schematics in Minecraft can be placed using the Litematica mod by Masady. It is an extensive add-on that offers the ability to visualize and place 3D holograms of structures to aid your builds.

Litematica is one of the most useful Minecraft mods for builders. It adds a ton of extra functionality to creative mode, including area cloning, moving, filling, and deleting.