My wiki cannot start because of this

tomcat9.service - Apache Tomcat 9 Web Application Server
Loaded: loaded (/lib/systemd/system/tomcat9.service; enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/tomcat9.service.d
└─xwiki-tomcat9-systemd.conf
Active: active (running) since Mon 2021-03-08 18:48:23 UTC; 2min 44s ago
Docs: Apache Tomcat 9 (9.0.89) - Documentation Index
Process: 451 ExecStartPre=/usr/libexec/tomcat9/tomcat-update-policy.sh (code=exited, status=0/SUCCESS)
Main PID: 470 (java)
Tasks: 37 (limit: 4638)
Memory: 658.0M
CGroup: /system.slice/tomcat9.service
└─470 /usr/lib/jvm/default-java/bin/java -Djava.util.logging.config.file=/var/lib/tomcat9/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headle>

Mar 08 18:48:29 ip-172-31-42-76 tomcat9[470]: The path attribute with value [/xwiki] in deployment descriptor [/etc/tomcat9/Catalina/localhost/xwiki.xml] has been ignored
Mar 08 18:48:38 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:38,567 [main] INFO iPropertiesConfigurationSource - Loading [xwiki.properties] from default location [/etc/xwiki/xwiki.properties]
Mar 08 18:48:38 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:38,847 [main] INFO o.x.e.i.ServletEnvironment - Using permanent directory [/var/lib/xwiki/data]
Mar 08 18:48:50 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:50,729 [main] INFO o.x.s.s.i.EmbeddedSolr - Starting embedded Solr server…
Mar 08 18:48:50 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:50,730 [main] INFO o.x.s.s.i.EmbeddedSolr - Using Solr home directory: [/var/lib/xwiki/data/store/solr]
Mar 08 18:48:52 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:52,713 [main] WARN o.e.j.u.s.S.config - Trusting all certificates configured for Client@51db8b10[provider=null,keyStore=null,trustStor>
Mar 08 18:48:52 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:52,714 [main] WARN o.e.j.u.s.S.config - No Client EndPointIdentificationAlgorithm configured for Client@51db8b10[provider=null,keyStor>
Mar 08 18:48:53 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:53,020 [main] WARN o.e.j.u.s.S.config - Trusting all certificates configured for Client@3ef2816a[provider=null,keyStore=null,trustStor>
Mar 08 18:48:53 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:53,021 [main] WARN o.e.j.u.s.S.config - No Client EndPointIdentificationAlgorithm configured for Client@3ef2816a[provider=null,keyStor>
Mar 08 18:48:52 ip-172-31-42-76 tomcat9[470]: 2021-03-08 18:48:52,707 [main] WARN o.a.s.c.CoreContainer - Not all security plugins configured! authentication=disabled authorization=disabled. Solr is>

Everything in this log is expected, so I don’t think it’s the reason why your wiki is not starting. You don’t have anything else ?