In-memory pack generation error

[sarhatabaot]

Agreements

• I am running the latest version of Nova.
• I am running the latest version of my server software.
• I have checked for similar issues.
• I am using an official build of Nova.

Before creating a bug report, please validate that the issue you're encountering is not caused by another plugin (Remove all other plugins from the server). If it is, please name the plugin that causes the issue.

There are no other plugins running on my server.

Plugin Version, Server Software, Server Version

Nova v0.13-alpha.7, Purpur git-Purpur-1967 (1.19.4)

Nova Addons and Versions

jetpacks v0.1.8-RC, simple_upgrades v1.0-RC, logistics v0.2.4-RC.2, machines v0.4-RC.4

Expected behavior

Pack should create.

Observed/Actual behavior

See error.

Steps to reproduce

1. Ensure in_memory is set to true.
2. Run /nova resourcePack create

Full server log

https://pastebin.com/eM2bncYq

Errors

https://pastebin.com/0fxSHXsj

Additional context

Disabling the "in_memory" feature allows the pack to be created.