Feedback sending, java.lang.NoClassDefFoundError: javax/activation/DataSource

[PeriklisICES]

Describe the bug
I recently upgraded to 4.4.5 and the Feedback email for the workflows returns this:
ERROR [geonetwork] - Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: javax/activation/DataSource org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: javax/activation/DataSource at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1087) ~[spring-webmvc-5.3.33.jar:5.3.33] at jeeves.config.springutil.JeevesDispatcherServlet.access$001(JeevesDispatcherServlet.java:44) ~[gn-core-4.4.5-0.jar:?] at jeeves.config.springutil.JeevesDispatcherServlet$1.doInTransaction(JeevesDispatcherServlet.java:56) ~[gn-core-4.4.5-0.jar:?] at jeeves.config.springutil.JeevesDispatcherServlet$1.doInTransaction(JeevesDispatcherServlet.java:52) ~[gn-core-4.4.5-0.jar:?] at jeeves.transaction.TransactionManager.runInTransaction(TransactionManager.java:75) ~[gn-core-4.4.5-0.jar:?] at jeeves.config.springutil.JeevesDispatcherServlet.doDispatch(JeevesDispatcherServlet.java:49) ~[gn-core-4.4.5-0.jar:?] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:965) ~[spring-webmvc-5.3.33.jar:5.3.33] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.33.jar:5.3.33] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.33.jar:5.3.33] at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) ~[servlet-api-3.1.jar:3.1.0]

To Reproduce

1. Go to Settings and use the "Test email configuration"

Desktop (please complete the following information):

• Windows
• GeoNetwork Version 4.4.5
• Jetty with Java 11.0.17