An error in the "extractNamedGroups" method

[RefaelAdi]

Hello
I'm using Gradle version 7.1.1 and Java 18
When executing the "extractNamedGroups" I'm getting this:
java.lang.ClassCastException: class java.util.regex.Matcher$ImmutableMatchResult cannot be cast to class java.util.regex.Matcher (java.util.regex.Matcher$ImmutableMatchResult

I found that this occurs in this part of the code:

grok/src/main/java/org/aicer/grok/util/Grok.java

Line 54 in 325e7f1

MatchResult r = matcher.toMatchResult();

Any idea?