Migrating app from CF10 to CF2018 - token generation error

Migrating an old application from CF10 to CF2018 and running into problems.  The application uses a set of Java classes (which are on JAR files in the WEB-INF/lib directory).  Everything worked on the CF10 version, but after clearing up some issues (missing javax.xml.bind - downloaded and included that in the /lib directory to fix that), I am currently getting the following error:

Sep 25, 2023 10:55:25 AM defapp defmod
SEVERE: Error requesting token: invalid_request=javax.ws.rs.ProcessingException: org.apache.cxf.BusException: No conduit initiator was found for the namespace http://cxf.apache.org/transports/http. [user=DEVSERVER1$] 4491b84b-75d9-4a9c-b128-6704cbec1017
Sep 25, 2023 10:55:25 AM defapp defmod
SEVERE: ERROR MESSAGE FROM PAYER :: null [user=DEVSERVER1$] 4491b84b-75d9-4a9c-b128-6704cbec1017
Sep 25, 2023 10:55:25 AM defapp defmod
SEVERE: <----Payment Failed---->
java.lang.RuntimeException: Error getting home
<----Request---->
[ ] [user=DEVSERVER1$] 4491b84b-75d9-4a9c-b128-6704cbec1017
Sep 25, 2023 10:55:25 AM defapp defmod
SEVERE: <----Payment Failed---->
java.lang.RuntimeException: Error getting home

Not sure how to resolve the CXF issues.