Minim server crashed in Diskstation DS214se after firmware update

[jolivetj]

MinimServer 0.8.4, Copyright © 2012-2016 Simon Nash. All rights reserved.
Java™ SE Runtime Environment (build 1.7.0_60-b19)
Java HotSpot™ Client VM (build 24.60-b09, mixed mode)
Platform default charset is UTF-8
autoUpdate: installed package 'minimserver-0.8-update-110'
autoUpdate: relaunching runtime
MinimServer 0.8.4 update 110, Copyright © 2012-2017 Simon Nash. All rights reserved.
Java™ SE Runtime Environment (build 1.7.0_60-b19)
Java HotSpot™ Client VM (build 24.60-b09, mixed mode)
Platform default charset is UTF-8
Language setting is 'fre'
Current time is Sun Dec 03 13:47:32 PST 2017 in time zone Canada/Pacific
starting MinimServer[DiskStation]
MinimServer internal error: Item oldKey=570 newKey=571
MinimServer error: now stopped, use 'restart' or 'exit'

Same thing on MinimServer on my other server:

stopping MinimServer[NASC66EA1]
MinimServer[NASC66EA1] is stopped
Language setting is 'auto'
Current time is Mon Dec 04 17:44:09 EST 2017 in time zone US/Eastern
starting MinimServer[NASC66EA1]
MinimServer internal error: Item oldKey=798 newKey=799

Both messages appeared after Rescans.