Cannot load Java delegate class when authentication is turned on

Hello everyone,

I have a business process that utilizes dmn, bpmn, java objects, and java delegates being deployed by WAR file to Camunda 7.12 Full Distribution on Tomcat. I am able to successfully start a new process instance using the REST API when authentication is off, however, when I add the filter to the web.xml file as specified here (Configure Authentication | docs.camunda.org) to turn it on, I now start getting a 500 error, stating my Java delegate cannot be loaded (it utilizes the Spin library, if that matters at all).

I have tested other API calls (such as "GET"s) with authentication turned on, and encounter no errors. If you could please provide some guidance on where to go from here, that’d be greatly appreciated!