suggester error

[chenchuanliang]

23-Jul-2025 13:21:14.730 serious [OpenGrok-suggester-rebuild-123] org.opengrok.suggest.Suggester.lambda$getInitRunnable$3 Could not initialize suggester data for 'SuggesterProjectData{indexDir=MMapDirectory@/opengrokData/index/YN433 lockFactory=org.apache.lucene.store.NativeFSLockFactory@358f6234, suggesterDir=/opengrokData/suggester/YN433, allowMostPopular=true}'
java.lang.NumberFormatException: For input string: ""
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
at java.base/java.lang.Long.parseLong(Long.java:721)
at java.base/java.lang.Long.parseLong(Long.java:836)
at org.opengrok.suggest.SuggesterProjectData.getDataVersion(SuggesterProjectData.java:542)
at org.opengrok.suggest.SuggesterProjectData.init(SuggesterProjectData.java:156)
at org.opengrok.suggest.Suggester.lambda$getInitRunnable$3(Suggester.java:302)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)

Does this error affect the program's operation？
Thanks