Hi Ralph, Did you check your api jar was matching tomcat impl version? destroy is in the interface (default method): https://github.com/apache/tomcat/blob/9.0.x/java/javax/servlet/Filter.java#L119 So without more details it sounds you have a dependency conflict or outdated import.
Romain Manni-Bucau @rmannibucau <https://twitter.com/rmannibucau> | Blog <https://rmannibucau.metawerx.net/> | Old Blog <http://rmannibucau.wordpress.com> | Github <https://github.com/rmannibucau> | LinkedIn <https://www.linkedin.com/in/rmannibucau> | Book <https://www.packtpub.com/application-development/java-ee-8-high-performance> Le mar. 22 sept. 2020 à 07:22, Ralph Goers <rgo...@apache.org> a écrit : > I don’t understand why > https://bz.apache.org/bugzilla/show_bug.cgi?id=63528 < > https://bz.apache.org/bugzilla/show_bug.cgi?id=63528> was closed with the > comment “bugzilla is not a support forum”. Where else is one supposed to > report bugs in Tomcat as this is a legitimate bug? It seems that WsFilter > and GenericFilter were modified around the same time and at various points > in time one or the other had a destroy method, but in the end neither did > and it results in an error whenever the embedded tomcat in Spring Boot > shuts down. This bug still exists in 9.0.38. > > Ralph