[SOLVED] Tag Mismatch using RememberMe token with Shiro

A few releases ago of my website, I started getting the following warnings showing up in my error logs over and over again.

Message:
Delegate RememberMeManager instance of type [org.apache.shiro.web.mgt.CookieRememberMeManager] threw an exception during getRememberedPrincipals().

Exception:
org.apache.shiro.crypto.CryptoException: Unable to execute 'doFinal' with cipher instance [Cipher.AES/GCM/NoPadding, mode: decryption, algorithm from: SunJCE].
    at org.apache.shiro.crypto.JcaCipherService.crypt(JcaCipherService.java:462)
    at org.apache.shiro.crypto.JcaCipherService.crypt(JcaCipherService.java:445)
    at org.apache.shiro.crypto.JcaCipherService.decrypt(JcaCipherService.java:390)
    at org.apache.shiro.crypto.JcaCipherService.decrypt(JcaCipherService.java:382)
    at org.apache.shiro.mgt.AbstractRememberMeManager.decrypt(AbstractRememberMeManager.java:482)
    at org.apache.shiro.mgt.AbstractRememberMeManager.convertBytesToPrincipals(AbstractRememberMeManager.java:419)
    at org.apache.shiro.mgt.AbstractRememberMeManager.getRememberedPrincipals(AbstractRememberMeManager.java:386)
    at org.apache.shiro.mgt.DefaultSecurityManager.getRememberedIdentity(DefaultSecurityManager.java:613)
    at org.apache.shiro.mgt.DefaultSecurityManager.resolvePrincipals(DefaultSecurityManager.java:501)
    at org.apache.shiro.mgt.DefaultSecurityManager.createSubject(DefaultSecurityManager.java:347)
    at org.apache.shiro.subject.Subject$Builder.buildSubject(Subject.java:845)
    at org.apache.shiro.web.subject.WebSubject$Builder.buildWebSubject(WebSubject.java:148)
    at org.apache.shiro.web.servlet.AbstractShiroFilter.createSubject(AbstractShiroFilter.java:292)
    at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:359)
    at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:141)
    at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:82)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at ch.qos.logback.classic.helpers.MDCInsertingServletFilter.doFilter(MDCInsertingServletFilter.java:49)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: javax.crypto.AEADBadTagException: Tag mismatch!
    at java.base/com.sun.crypto.provider.GaloisCounterMode.decryptFinal(GaloisCounterMode.java:623)
    at java.base/com.sun.crypto.provider.CipherCore.finalNoPadding(CipherCore.java:1118)
    at java.base/com.sun.crypto.provider.CipherCore.fillOutputBuffer(CipherCore.java:1055)
    at java.base/com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:855)
    at java.base/com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:446)
    at java.base/javax.crypto.Cipher.doFinal(Cipher.java:2207)
    at org.apache.shiro.crypto.JcaCipherService.crypt(JcaCipherService.java:459)
    ... 51 common frames omitted

I made no changes in regards to my RememberMe token (that I know of) such as my cypher key during this time. I do try to keep my supporting libraries up-to-date so it is possible that one of the upgrades caused this but I otherwise have no real idea. The strange thing is that my website seems unaffected, no one has reported problems with the RememberMe token not remembering them. I would love to know what is going on so I can get rid of these warnings to feel secure again about my site. Any help greatly appreciated. Here are some relevant 3rd-party packages I'm currently using...

        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.7.0</version>
        </dependency>

        <dependency>
          <groupId>org.apache.shiro</groupId>
          <artifactId>shiro-spring</artifactId>
          <version>1.7.0</version>
        </dependency>

        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>5.3.0</version>
        </dependency>

        <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-web</artifactId>
          <version>2.4.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-jdbc</artifactId>
            <version>2.4.1</version>
        </dependency>

UPDATE:

I should say that my Remember Cookie is configured via the following code:

@Configuration
public class SpringBeanConfigurer {
    @Bean
    public org.apache.shiro.mgt.SecurityManager securityManager() {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(<myRealm>;

        CookieRememberMeManager rmm = new CookieRememberMeManager();
        rmm.setCipherKey(Base64.decode(<cipher key string>));
        securityManager.setRememberMeManager(rmm);

        return securityManager;
    }
}