BUG: DateTime Matcher with custom format throws error

[vbearn]

• Which version of WireMock you're using:
  Latest Docker Version (2.33.2 as of now, digest 4fa551f46a...)

• How you're starting and configuring WireMock, including configuration or CLI the command line:
  By running docker run -it --rm -p 8080:8080 -v C:\DataC\Temp\mappings:/home/wiremock --name wiremock wiremock/wiremock:2.33.2

• A failing test case that demonstrates the problem:
  Add these two mappings (either through the __admin api or through the mapped folder in hard drive):

Mapping A

{
    "priority": 1,
    "request": {
        "urlPath": "/api/TestA",
        "method": "GET",
        "queryParameters": {
            "caseNumber": {
                "actualFormat": "yyyyMMdd-HHmm-ss'xx-mock-guidxxxxxxxx'",
                "before": "now -30 seconds"
            }
        }
    },
    "response": {
        "status": 200,
        "jsonBody": {
            "ResultCode": "Approved"
        }
    }
}

Mapping B

{
    "priority": 1,
    "request": {
        "urlPath": "/api/TestB",
        "method": "GET"
    },
    "response": {
        "status": 200,
        "headers": {
            "Content-Type": "application/json"
        },
        "jsonBody": {
            "ResultCode": "Approved"
        }
    }
}

Test it with query 1 (which will work as expected):
✅ GET http://localhost:8080/api/TestA?caseNumber=20220523-0800-25xx-mock-guidxxxxxxxx

THE BUG: If test with query 2:
❌ GET /api/TestB

the Wiremock will throw the error:

java.lang.NullPointerException: text
	at java.base/java.util.Objects.requireNonNull(Unknown Source)
	at java.base/java.time.format.DateTimeFormatter.parse(Unknown Source)
	at java.base/java.time.ZonedDateTime.parse(Unknown Source)
	at com.github.tomakehurst.wiremock.common.DateTimeParser.parseZonedDateTime(DateTimeParser.java:77)
	at com.github.tomakehurst.wiremock.matching.AbstractDateTimePattern.parseZonedOrNull(AbstractDateTimePattern.java:248)
	at com.github.tomakehurst.wiremock.matching.AbstractDateTimePattern.parseZonedOrNull(AbstractDateTimePattern.java:238)
	at com.github.tomakehurst.wiremock.matching.AbstractDateTimePattern.match(AbstractDateTimePattern.java:205)
	at com.github.tomakehurst.wiremock.matching.AbstractDateTimePattern.match(AbstractDateTimePattern.java:31)
	at com.github.tomakehurst.wiremock.matching.MultiValuePattern$1.apply(MultiValuePattern.java:76)
	at com.github.tomakehurst.wiremock.matching.MultiValuePattern$1.apply(MultiValuePattern.java:74)
	at wiremock.com.google.common.collect.Lists$TransformingRandomAccessList$1.transform(Lists.java:625)
	at wiremock.com.google.common.collect.TransformedIterator.next(TransformedIterator.java:52)
	at java.base/java.util.Collections.min(Unknown Source)
	at com.github.tomakehurst.wiremock.matching.MultiValuePattern.getBestMatch(MultiValuePattern.java:80)
	at com.github.tomakehurst.wiremock.matching.MultiValuePattern.match(MultiValuePattern.java:51)
	at com.github.tomakehurst.wiremock.matching.RequestPattern$4.apply(RequestPattern.java:325)
	at com.github.tomakehurst.wiremock.matching.RequestPattern$4.apply(RequestPattern.java:320)
	at wiremock.com.google.common.collect.Iterators$6.transform(Iterators.java:829)
	at wiremock.com.google.common.collect.TransformedIterator.next(TransformedIterator.java:52)
	at wiremock.com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:278)
	at wiremock.com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:239)
	at wiremock.com.google.common.collect.FluentIterable.toList(FluentIterable.java:631)
	at com.github.tomakehurst.wiremock.matching.RequestPattern.allQueryParamsMatch(RequestPattern.java:328)
	at com.github.tomakehurst.wiremock.matching.RequestPattern.access$600(RequestPattern.java:43)
	at com.github.tomakehurst.wiremock.matching.RequestPattern$1.match(RequestPattern.java:102)
	at com.github.tomakehurst.wiremock.matching.RequestPattern$1.match(RequestPattern.java:90)
	at com.github.tomakehurst.wiremock.matching.RequestPattern.match(RequestPattern.java:226)
	at com.github.tomakehurst.wiremock.stubbing.InMemoryStubMappings$3.apply(InMemoryStubMappings.java:231)
	at com.github.tomakehurst.wiremock.stubbing.InMemoryStubMappings$3.apply(InMemoryStubMappings.java:229)
	at wiremock.com.google.common.collect.Iterators.find(Iterators.java:758)
	at wiremock.com.google.common.collect.Iterables.find(Iterables.java:693)
	at com.github.tomakehurst.wiremock.stubbing.InMemoryStubMappings.serveFor(InMemoryStubMappings.java:76)
	at com.github.tomakehurst.wiremock.core.WireMockApp.serveStubFor(WireMockApp.java:226)
	at com.github.tomakehurst.wiremock.http.StubRequestHandler.handleRequest(StubRequestHandler.java:57)
	at com.github.tomakehurst.wiremock.http.AbstractRequestHandler.handle(AbstractRequestHandler.java:69)
	at com.github.tomakehurst.wiremock.servlet.WireMockHandlerDispatchingServlet.service(WireMockHandlerDispatchingServlet.java:142)
	at wiremock.javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at wiremock.org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
	at wiremock.org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1631)
	at wiremock.org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
	at wiremock.org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at wiremock.org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
	at wiremock.org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at wiremock.org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
	at wiremock.org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at wiremock.org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
	at wiremock.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at wiremock.org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:763)
	at wiremock.org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
	at wiremock.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at wiremock.org.eclipse.jetty.server.Server.handle(Server.java:516)
	at wiremock.org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
	at wiremock.org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
	at wiremock.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
	at wiremock.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
	at wiremock.org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at wiremock.org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at wiremock.org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at wiremock.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
	at wiremock.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
	at wiremock.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
	at wiremock.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
	at wiremock.org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
	at wiremock.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
	at wiremock.org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
	at java.base/java.lang.Thread.run(Unknown Source)

Observations:

• Interestingly, executing query 1 against Mapping A which includes the custom date matcher "actualFormat": "yyyyMMdd-HHmm-ss'xx-mock-guidxxxxxxxx'" does work as expected without any bug, but the other unrelated endpoint breaks, persumably because it is wrongly searching for a (non-existing) query parameter

• Playing around with the priority field doesn't make a difference in the resulting error, unfortunately