クロール処理中にアプリ停止 以降ブラウザでFESSが起動しなくなる

まだ症状の回復にまで至っていないのですが、fess-crawler.logにて以下エラー文を見つけましたため、追記させていただきます。

2021-12-24 19:52:13,576 [main] ERROR Crawler does not work correctly.
org.lastaflute.di.exception.ContainerInitFailureException: Look! Read the message below.
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Failed to initialize the container.

[Path]
esclient.xml

[Namespace]
null

[Included by]
esflute_config.xml
esflute_user.xml
esflute_log.xml
* * * * * * * * * */
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.throwContainerInitFailureException(LaContainerImpl.java:463) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.init(LaContainerImpl.java:415) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.doInit(LaContainerImpl.java:431) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.init(LaContainerImpl.java:413) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.doInit(LaContainerImpl.java:431) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.init(LaContainerImpl.java:413) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.doInit(LaContainerImpl.java:431) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.init(LaContainerImpl.java:413) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.factory.SingletonLaContainerFactory.init(SingletonLaContainerFactory.java:67) ~[lasta-di-0.8.3.jar:?]
        at org.codelibs.fess.exec.Crawler.main(Crawler.java:222) [classes/:?]
Caused by: org.lastaflute.di.core.exception.IllegalMethodRuntimeException: [ESSR0060]Can not configure method(open) of org.codelibs.fess.es.client.SearchEngineClient, because [fess] IndexNotFoundException[no such index [fess]]
        at org.lastaflute.di.core.assembler.AbstractMethodAssembler.invoke(AbstractMethodAssembler.java:61) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.assembler.DefaultInitMethodAssembler.assemble(DefaultInitMethodAssembler.java:40) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.deployer.SingletonComponentDeployer.assemble(SingletonComponentDeployer.java:57) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.deployer.SingletonComponentDeployer.deploy(SingletonComponentDeployer.java:41) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.deployer.SingletonComponentDeployer.init(SingletonComponentDeployer.java:35) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.ComponentDefImpl.init(ComponentDefImpl.java:85) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.doInit(LaContainerImpl.java:434) ~[lasta-di-0.8.3.jar:?]
        at org.lastaflute.di.core.meta.impl.LaContainerImpl.init(LaContainerImpl.java:413) ~[lasta-di-0.8.3.jar:?]
        ... 8 more
Caused by: org.codelibs.fesen.index.IndexNotFoundException: no such index [fess]
        at org.codelibs.fesen.client.action.HttpGetMappingsAction.lambda$execute$0(HttpGetMappingsAction.java:47) ~[fesen-httpclient-0.12.0.jar:?]
        at org.codelibs.curl.CurlRequest.lambda$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) ~[?:?]
2021-12-24 19:52:13,616 [main] INFO  Destroyed LaContainer.

調査の中で別スレッドにて類似スレッドがありましたので記載しておきます。
ただ、該当のものはブラウザ復旧まで至っていないので本スレッドは継続させていただきます。

ファイルクローラー実行時にエラーが発生する

よろしくお願いします。