broken search on 1491 with the gradle PR

[ArneBab]

Internal error: please report

java.lang.NoClassDefFoundError: Could not initialize class plugins.Library.index.ProtoIndexComponentSerialiser
	at plugins.Library.index.ProtoIndexSerialiser.forIndex(ProtoIndexSerialiser.java:91)
	at plugins.Library.index.ProtoIndexSerialiser.forIndex(ProtoIndexSerialiser.java:72)
	at plugins.Library.Library.getIndex(Library.java:679)
	at plugins.Library.Library.getIndex(Library.java:642)
	at plugins.Library.Library.getIndex(Library.java:618)
	at plugins.Library.search.Search.splitQuery(Search.java:241)
	at plugins.Library.search.Search.startSearch(Search.java:103)
	at plugins.Library.search.Search.startSearch(Search.java:110)
	at plugins.Library.ui.MainPage.processPostRequest(MainPage.java:192)
	at plugins.Library.ui.MainPageToadlet.handleMethodPOST(MainPageToadlet.java:100)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at freenet.clients.http.ToadletContextImpl.callToadletMethod(ToadletContextImpl.java:765)
	at freenet.clients.http.ToadletContextImpl.handle(ToadletContextImpl.java:678)
	at freenet.clients.http.SimpleToadletServer$SocketHandler.run(SimpleToadletServer.java:1070)
	at freenet.support.PooledExecutor$MyThread.innerRun(PooledExecutor.java:249)
	at freenet.support.PooledExecutor$MyThread.realRun(PooledExecutor.java:189)
	at freenet.support.io.NativeThread.run(NativeThread.java:156)