Caused by: java.lang.NullPointerException
at java.base/java.util.Comparator#lambda$comparingInt$7b0bb60$1:494
at java.base/java.util.TimSort#countRunAndMakeAscending:355
at java.base/java.util.TimSort#sort:220
at java.base/java.util.Arrays#sort:1308
at java.base/java.util.ArrayList#sort:1804
at java.base/java.util.stream.SortedOps$RefSortingSink#end:392
at java.base/java.util.stream.Sink$ChainedReference#end:261
at java.base/java.util.stream.Sink$ChainedReference#end:261
at java.base/java.util.stream.Sink$ChainedReference#end:261
at java.base/java.util.stream.AbstractPipeline#copyInto:510
at java.base/java.util.stream.AbstractPipeline#wrapAndCopyInto:499
at java.base/java.util.stream.ReduceOps$ReduceOp#evaluateSequential:921
at java.base/java.util.stream.AbstractPipeline#evaluate:234
at java.base/java.util.stream.ReferencePipeline#collect:682
at org.ametys.web.frontoffice.search.metamodel.SearchServiceCreationHelper#_getAdditionalParameterConfigurationsOfSearchables:342
at org.ametys.web.frontoffice.search.metamodel.SearchServiceCreationHelper#getAdditionalParameterConfigurationsForGeneral:329
at org.ametys.web.frontoffice.search.SearchService#_parseAndInjectGeneralAdditionalParameters:296
at org.ametys.web.frontoffice.search.SearchService#configureParameters:217
at org.ametys.web.service.StaticService#configure:213
at org.apache.avalon.framework.container.ContainerUtil#configure:202
at org.ametys.runtime.plugin.component.ThreadSafeComponentManager$ComponentFactory#configureAndStart:396
at org.ametys.runtime.plugin.component.ThreadSafeComponentManager$ComponentFactory#newInstance:415
at org.ametys.runtime.plugin.component.ThreadSafeComponentManager#initialize:230
... 228 more