I am a person who purchased this plugin in Korea

[dlatjqls1]

What plugin is this ticket in relation to?
Are you using Specialized Crates, or Advanced Crates?
Specialized Crates

Versions:

• Server Version:1.12.2
• Plugin Version:3.5.0

Describe the bug
A clear and concise description of what the bug is.
In-game, after deleting all rewards to change them and creating new ones, clicking on the new reward causes a Bukkit error.
To Reproduce
Steps to reproduce the behavior:

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Error / Logs
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Config File
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Crate File
Please upload the crate files that you are having issues with to https://pastebin.com and provide your Pastebin URL.

If it can't be fixed, I would like a refund. I am Korean and not fluent in English, so this is very difficult for me