[org.bukkit.configuration.serialization.ConfigurationSerialization] Could not call method

[Nunchakin]

Description of Issue

IDK what it means just some CMI error in console

Version Information

[22:02:59 INFO]: --------------------------------------------------
>....
[22:02:59 INFO]: CMI plugin version: 9.7.3.2 SqLite
>....
[22:02:59 INFO]: CMILib: 1.4.7.16
>....
[22:02:59 INFO]: Server: Paper(138) 1.20.6-R0.1-SNAPSHOT-
>....
[22:02:59 INFO]: CMI economy: Zapnuté Vault: 1.7.3-CMI CMI Chat: Zapnuté
>....
[22:02:59 INFO]: Modules -> 59 enabled 5 disabled: hpBossBar, chatBubble, tablist, votifier, spawners
>....
[22:02:59 INFO]: --------------------------------------------------

Errors

https://pastebin.com/Z92dtkhW

Relevant Config Sections

No response

Relevant Plugins

No response

Agreements

• [X] My server is supported by CMI.
• [X] My version of CMI at the time of this report is up to date.
• [X] I have searched the github and asked around before making this report.

[Nunchakin]

[Nunchakin]

If it has something to do with heads I just want to write that after updating from 1.20.4 to 1.20.6 my GuiPlus plugin and my menu now dont have the heads and they are all steve now, when I add a new head it works but the old ones do not

[Nunchakin]

Hey