クロール時に発生するFailed to access Fesenのエラーについて

お世話になっております。
fessを用いてBOXへのクロールを行っているのですが、クロール時にエラーが繰り返し発生しており、
最終的にERROR Failed to process a data crawling: BOX org.dbflute.exception.InvalidQueryRegisteredException: Cannot register null or empty query: name=url value= のエラーでクロールが失敗してしまいます。

原因として考えられることなどありますでしょうか?
バージョンはfessが13.13.0、BOX用プラグインはfess-ds-box 13.13.0を使用しています。
また、FesenではなくElasticsearchを使用しています。

繰り返し出力されているエラー文は以下のものです。

 [pool-5-thread-1] DEBUG Failed to access Fesen stats.
org.codelibs.fesen.FesenStatusException: {"_nodes":{(文書情報を含むためindex情報略)}}
    at org.codelibs.fesen.client.action.HttpAction.toFesenException(HttpAction.java:142) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.lambda$execute$0(HttpNodesStatsAction.java:88) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.curl.CurlRequest.lambda$execute$4(CurlRequest.java:220) ~[curl4j-1.2.4.jar:?]
    at org.codelibs.curl.CurlRequest.lambda$connect$3(CurlRequest.java:199) ~[curl4j-1.2.4.jar:?]
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) ~[?:?]
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) ~[?:?]
    at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) ~[?:?]
    at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) ~[?:?]
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) ~[?:?]
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183) ~[?:?]
    Suppressed: com.fasterxml.jackson.core.exc.InputCoercionException: Numeric value (4135388170) out of range of int (-2147483648 - 2147483647)
 at [Source: (ByteArrayInputStream); line: 1, column: 1336]
        at com.fasterxml.jackson.core.base.ParserMinimalBase._reportInputCoercion(ParserMinimalBase.java:599) ~[jackson-core-2.12.3.jar:2.12.3]
        at com.fasterxml.jackson.core.base.ParserMinimalBase.reportOverflowInt(ParserMinimalBase.java:568) ~[jackson-core-2.12.3.jar:2.12.3]
        at com.fasterxml.jackson.core.base.ParserBase.convertNumberToInt(ParserBase.java:936) ~[jackson-core-2.12.3.jar:2.12.3]
        at com.fasterxml.jackson.core.base.ParserBase._parseIntValue(ParserBase.java:849) ~[jackson-core-2.12.3.jar:2.12.3]
        at com.fasterxml.jackson.core.base.ParserBase.getIntValue(ParserBase.java:680) ~[jackson-core-2.12.3.jar:2.12.3]
        at org.codelibs.fesen.common.xcontent.json.JsonXContentParser.doIntValue(JsonXContentParser.java:162) ~[fesen-x-content-0.13.0.jar:0.13.0]
        at org.codelibs.fesen.common.xcontent.support.AbstractXContentParser.intValue(AbstractXContentParser.java:149) ~[fesen-x-content-0.13.0.jar:0.13.0]
        at org.codelibs.fesen.common.xcontent.support.AbstractXContentParser.intValue(AbstractXContentParser.java:133) ~[fesen-x-content-0.13.0.jar:0.13.0]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseProcessStatsCpu(HttpNodesStatsAction.java:922) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseProcessStats(HttpNodesStatsAction.java:873) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseNodeStats(HttpNodesStatsAction.java:168) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseNodes(HttpNodesStatsAction.java:127) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.fromXContent(HttpNodesStatsAction.java:106) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.lambda$execute$0(HttpNodesStatsAction.java:85) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.curl.CurlRequest.lambda$execute$4(CurlRequest.java:220) ~[curl4j-1.2.4.jar:?]
        at org.codelibs.curl.CurlRequest.lambda$connect$3(CurlRequest.java:199) ~[curl4j-1.2.4.jar:?]
        at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) ~[?:?]
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) ~[?:?]
        at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) ~[?:?]
        at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) ~[?:?]
        at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) ~[?:?]
        at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183) ~[?:?]
    Suppressed: org.codelibs.fesen.common.ParsingException: Failed to parse object: expecting field with name [error] but found [_nodes]
        at org.codelibs.fesen.common.xcontent.XContentParserUtils.ensureFieldName(XContentParserUtils.java:52) ~[fesen-engine-server-0.13.0.jar:0.13.0]
        at org.codelibs.fesen.FesenException.failureFromXContent(FesenException.java:592) ~[fesen-engine-server-0.13.0.jar:0.13.0]
        at org.codelibs.fesen.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:179) ~[fesen-engine-server-0.13.0.jar:0.13.0]
        at org.codelibs.fesen.client.action.HttpAction.toFesenException(HttpAction.java:138) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.fesen.client.action.HttpNodesStatsAction.lambda$execute$0(HttpNodesStatsAction.java:88) ~[fesen-httpclient-0.13.0.jar:?]
        at org.codelibs.curl.CurlRequest.lambda$execute$4(CurlRequest.java:220) ~[curl4j-1.2.4.jar:?]
        at org.codelibs.curl.CurlRequest.lambda$connect$3(CurlRequest.java:199) ~[curl4j-1.2.4.jar:?]
        at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426) ~[?:?]
        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) ~[?:?]
        at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) ~[?:?]
        at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) ~[?:?]
        at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) ~[?:?]
        at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183) ~[?:?]
Caused by: com.fasterxml.jackson.core.exc.InputCoercionException: Numeric value (4135388170) out of range of int (-2147483648 - 2147483647)
 at [Source: (ByteArrayInputStream); line: 1, column: 1336]
    at com.fasterxml.jackson.core.base.ParserMinimalBase._reportInputCoercion(ParserMinimalBase.java:599) ~[jackson-core-2.12.3.jar:2.12.3]
    at com.fasterxml.jackson.core.base.ParserMinimalBase.reportOverflowInt(ParserMinimalBase.java:568) ~[jackson-core-2.12.3.jar:2.12.3]
    at com.fasterxml.jackson.core.base.ParserBase.convertNumberToInt(ParserBase.java:936) ~[jackson-core-2.12.3.jar:2.12.3]
    at com.fasterxml.jackson.core.base.ParserBase._parseIntValue(ParserBase.java:849) ~[jackson-core-2.12.3.jar:2.12.3]
    at com.fasterxml.jackson.core.base.ParserBase.getIntValue(ParserBase.java:680) ~[jackson-core-2.12.3.jar:2.12.3]
    at org.codelibs.fesen.common.xcontent.json.JsonXContentParser.doIntValue(JsonXContentParser.java:162) ~[fesen-x-content-0.13.0.jar:0.13.0]
    at org.codelibs.fesen.common.xcontent.support.AbstractXContentParser.intValue(AbstractXContentParser.java:149) ~[fesen-x-content-0.13.0.jar:0.13.0]
    at org.codelibs.fesen.common.xcontent.support.AbstractXContentParser.intValue(AbstractXContentParser.java:133) ~[fesen-x-content-0.13.0.jar:0.13.0]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseProcessStatsCpu(HttpNodesStatsAction.java:922) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseProcessStats(HttpNodesStatsAction.java:873) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseNodeStats(HttpNodesStatsAction.java:168) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.parseNodes(HttpNodesStatsAction.java:127) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.fromXContent(HttpNodesStatsAction.java:106) ~[fesen-httpclient-0.13.0.jar:?]
    at org.codelibs.fesen.client.action.HttpNodesStatsAction.lambda$execute$0(HttpNodesStatsAction.java:85) ~[fesen-httpclient-0.13.0.jar:?]
    ... 8 more

何かの値が、4135388170になっていて、整数として処理できないと言っているようにも見えます。