Please read https://tomcat.apache.org/migration-10.html#Server_Pages_3.0
and while you are there, read the whole guide ;-).

Kevin Huntly <kmhun...@gmail.com> schrieb am Mo., 17. Apr. 2023, 23:57:

> Hello,
>
> I'm getting the following exception when I try to access my webapp:
>
> 17-Apr-2023 17:52:55.982 SEVERE [catalina-exec-1]
> org.apache.catalina.core.ApplicationDispatcher.invoke Servlet.service() for
> servlet [jsp] threw exception
>         java.lang.ClassNotFoundException:
> javax.servlet.jsp.tagext.TagLibraryValidator
>                 at
>
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1437)
>                 at
>
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1245)
>                 at java.base/java.lang.ClassLoader.defineClass1(Native
> Method)
>                 at
> java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1013)
>                 at
>
> java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
>                 at
>
> org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2487)
>                 at
>
> org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:865)
>                 at
>
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1401)
>                 at
>
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1245)
>
> it's running on AlmaLinux and tomcat 10.1.7. If I do a grep for
> "TagLibraryValidator" I can find it in my app under WEB-INF/lib, so I'm not
> sure what's going on
> ________________________________________________
>
> Kevin Huntly
> Email: kmhun...@gmail.com
> Cell: 716/424-3311
> ________________________________________________
>
> -----BEGIN GEEK CODE BLOCK-----
> Version: 1.0
> GCS/IT d+ s a C++ UL+++$ P+(++) L+++ E---
> W+++ N+ o K(+) w--- O- M-- V-- PS+ PE Y(+)
> PGP++(+++) t+ 5-- X-- R+ tv+ b++  DI++ D++
> G++ e(+) h--- r+++ y+++*
> ------END GEEK CODE BLOCK------
>

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