Question1Replies32Views APPALA VENKATA SATYA Member since 2017 6 posts Cognizant Technology Solutions Posted: 4 months agoLast activity: 4 months 1 week ago Weareobservingthe"java.lang.NoClassDefFoundError: javax/activation/DataHandler" errorsWe are observing the "java.lang.NoClassDefFoundError: javax/activation/DataHandler" errors for correspondence (email) entries in the Agent queue "System-Queue-DefaultEntry"Java: 11.0.7 (AdoptOpenJDK)"We use PKS (Pivotal Container Service) + Docker images for Pega instances,i dont know why issue was happening in admin studio while sending email ? ***Edited by Moderator Marissa to update General to Product*** Pega Platform 7.3 Case Management Communications and Media System Architect ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Posted: 4 months agoKevinZheng_GCS PEGA replied to APPALA VENKATA SATYAIs this happening all the time? Noticed that you are running PKS and yet the pega version is 7.3. We only support Kubernetes deployment starting Pega 8.2+.