Report this, duplicate key exists in SQL on shutdown

[NoltoxGit]

Describe the issue

When I shutdown my server, i've this error on my console:

[10:40:43] [Plan MySQLDB-transaction-thread-1/ERROR]: [Plan] Ran into CompletionException - logged to plugins/Plan/logs/CompletionException-3cb80b8ae6.txt
[10:40:43] [Plan MySQLDB-transaction-thread-1/ERROR]: [Plan] (INCLUDE CONTENTS OF THE FILE IN ANY REPORTS)
[10:40:43] [Plan MySQLDB-transaction-thread-1/ERROR]: [Plan] What to do: Report this, duplicate key exists in SQL.

Exceptions & Other Logs

https://paste.helpch.at/aledofunaw.bash

Plugin versions

5.7 build 3123

Additional information

Full logs: https://mclo.gs/o4HLWmd#L3920