I am having this log and it bring 500 toast message while trying to log in as admin

I am having this issue webservices.rest: Unable to create instance of class defined for extension point: org.openmrs.admin.list, more log, AdministrationSectionExt class not found. java.lang.NoClassDefFoundError: org/openmrs/module/web/extension/AdministrationSectionExt at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_312] at java.lang.ClassLoader.defineClass(ClassLoader.java:756) ~[?:1.8.0_312] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_312] at java.net.URLClassLoader.defineClass(URLClassLoader.java:473) ~[?:1.8.0_312] at java.net.URLClassLoader.access$100(URLClassLoader.java:74) ~[?:1.8.0_312] at java.net.URLClassLoader$1.run(URLClassLoader.java:369) ~[?:1.8.0_312] at java.net.URLClassLoader$1.run(URLClassLoader.java:363) ~[?:1.8.0_312] at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_312] at java.net.URLClassLoader.findClass(URLClassLoader.java:362) ~[?:1.8.0_312] at org.openmrs.module.ModuleClassLoader.loadClass(ModuleClassLoader.java:638) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] at org.openmrs.module.ModuleClassLoader.loadClass(ModuleClassLoader.java:557) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_312] at org.openmrs.module.Module.expandExtensionNames(Module.java:565) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] at org.openmrs.module.Module.getExtensions(Module.java:492) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] at org.openmrs.module.ModuleFactory.startModuleInternal(ModuleFactory.java:672) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] at org.openmrs.api.context.Daemon$1.run(Daemon.java:86) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] Caused by: java.lang.ClassNotFoundException: org.openmrs.module.web.extension.AdministrationSectionExt at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1407) ~[tomcat-embed-core-9.0.52.jar:9.0.52] at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1215) ~[tomcat-embed-core-9.0.52.jar:9.0.52] at org.openmrs.module.ModuleClassLoader.loadClass(ModuleClassLoader.java:564) ~[openmrs-api-2.6.0-SNAPSHOT.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_312] … 16 more

which openmrs version are you running?

Version 2.6.0 Snapshot

Thats the screenshot

Error ScreenShot too