Illegal refelctive access

Running this script on:

• CentOS Linux release 7.6.1810 (Core)
• Release 8.8.12_GA_3794.RHEL7_64_20190329045002 RHEL7_64 FOSS edition, Patch 8.8.12_P4

Constantly leads to log entries like:

Tue Jul 23 20:54:30 CEST 2019 :Purging redolog directory and archives
Tue Jul 23 20:54:30 CEST 2019 :Purge redolog directory and archives done
Tue Jul 23 20:54:32 CEST 2019 :Replaying redologs...
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.openzal.zal.extension.StoreManagerImpl (file:/opt/zimbra/lib/ext/zimbradrive/zal.jar) to field java.lang.reflect.Method.modifiers
WARNING: Please consider reporting this to the maintainers of org.openzal.zal.extension.StoreManagerImpl
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/zimbra/lib/jars/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/zimbra/jetty_base/webapps/service/WEB-INF/lib/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
Tue Jul 23 20:54:38 CEST 2019 :Replaying redologs done

Still, sync seems to work so far. Apparently a problem with zal.jar, but is there any issues, I should take care of?