After the latest update of Yasson and JSON-B, GF now builds, starts up and deploys the admin console without errors:
[#|2020-06-04T16:35:11.704+0200|INFO|glassfish 6.0|javax.enterprise.system.core|_ThreadID=84;_ThreadName=pool-9-thread-1;_TimeMillis=1591281311704;_LevelValue=800;_MessageID=NCLS-CORE-00087;|
Grizzly Framework 3.0.0 started in: 1ms - bound to [/0.0.0.0:8080]|#]
[#|2020-06-04T16:35:11.710+0200|INFO|glassfish 6.0|javax.enterprise.system.core|_ThreadID=84;_ThreadName=pool-9-thread-1;_TimeMillis=1591281311710;_LevelValue=800;_MessageID=NCLS-CORE-00087;|
Grizzly Framework 3.0.0 started in: 1ms - bound to [/0.0.0.0:8181]|#]
[#|2020-06-04T16:35:12.001+0200|INFO|glassfish 6.0|javax.enterprise.system.tools.deployment.common|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312001;_LevelValue=800;|
visiting unvisited references|#]
[#|2020-06-04T16:35:12.338+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312338;_LevelValue=800;_MessageID=AS-WEB-GLUE-00198;|
Created HTTP listener http-listener-1 on host/port 0.0.0.0:8080|#]
[#|2020-06-04T16:35:12.342+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312342;_LevelValue=800;_MessageID=AS-WEB-GLUE-00198;|
Created HTTP listener http-listener-2 on host/port 0.0.0.0:8181|#]
[#|2020-06-04T16:35:12.343+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312343;_LevelValue=800;_MessageID=AS-WEB-GLUE-00198;|
Created HTTP listener admin-listener on host/port 0.0.0.0:4848|#]
[#|2020-06-04T16:35:12.359+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312359;_LevelValue=800;_MessageID=AS-WEB-GLUE-00200;|
Created virtual server server|#]
[#|2020-06-04T16:35:12.361+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312361;_LevelValue=800;_MessageID=AS-WEB-GLUE-00200;|
Created virtual server __asadmin|#]
[#|2020-06-04T16:35:12.535+0200|INFO|glassfish 6.0|javax.enterprise.web.core|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312535;_LevelValue=800;_MessageID=AS-WEB-CORE-00306;|
Setting JAAS app name glassfish-web|#]
[#|2020-06-04T16:35:12.536+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312536;_LevelValue=800;_MessageID=AS-WEB-GLUE-00201;|
Virtual server server loaded default web module |#]
[#|2020-06-04T16:35:12.713+0200|INFO|glassfish 6.0|javax.enterprise.system.core.security|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312713;_LevelValue=800;_MessageID=NCLS-SECURITY-01002;|
Java security manager is disabled.|#]
[#|2020-06-04T16:35:12.714+0200|INFO|glassfish 6.0|javax.enterprise.system.core.security|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312714;_LevelValue=800;_MessageID=NCLS-SECURITY-01010;|
Entering Security Startup Service.|#]
[#|2020-06-04T16:35:12.715+0200|INFO|glassfish 6.0|javax.enterprise.system.core.security|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312715;_LevelValue=800;_MessageID=NCLS-SECURITY-01143;|
Loading policy provider com.sun.enterprise.security.provider.PolicyWrapper.|#]
[#|2020-06-04T16:35:12.739+0200|INFO|glassfish 6.0|javax.enterprise.system.core.security|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281312739;_LevelValue=800;_MessageID=NCLS-SECURITY-01011;|
Security Service(s) started successfully.|#]
[#|2020-06-04T16:35:13.122+0200|INFO|glassfish 6.0|javax.enterprise.system.tools.deployment.common|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281313122;_LevelValue=800;|
visiting unvisited references|#]
[#|2020-06-04T16:35:13.134+0200|INFO|glassfish 6.0|javax.enterprise.system.tools.deployment.common|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281313134;_LevelValue=800;|
visiting unvisited references|#]
[#|2020-06-04T16:35:13.135+0200|INFO|glassfish 6.0|javax.enterprise.system.tools.deployment.common|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281313135;_LevelValue=800;|
visiting unvisited references|#]
[#|2020-06-04T16:35:13.532+0200|INFO|glassfish 6.0|javax.enterprise.admin.rest|_ThreadID=72;_ThreadName=admin-listener(1);_TimeMillis=1591281313532;_LevelValue=800;_MessageID=NCLS-REST-00001;|
Listening to REST requests at context: /management/domain.|#]
[#|2020-06-04T16:35:13.999+0200|INFO|glassfish 6.0|jakarta.enterprise.resource.webcontainer.jsf.config|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281313999;_LevelValue=800;_MessageID=jsf.config.listener.version;|
Initializing Mojarra 3.0.0-RC2 for context ''|#]
[#|2020-06-04T16:35:14.584+0200|INFO|glassfish 6.0|javax.enterprise.web|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281314584;_LevelValue=800;_MessageID=AS-WEB-GLUE-00172;|
Loading application [__admingui] at [/]|#]
[#|2020-06-04T16:35:14.585+0200|INFO|glassfish 6.0|javax.enterprise.system.core|_ThreadID=145;_ThreadName=Thread-31;_TimeMillis=1591281314585;_LevelValue=800;_MessageID=NCLS-CORE-00022;|
Loading application __admingui done in 2,790 ms|#]
[#|2020-06-04T16:35:15.098+0200|WARNING|glassfish 6.0|javax.enterprise.system.container.web.com.sun.web.security|_ThreadID=73;_ThreadName=admin-listener(2);_TimeMillis=1591281315098;_LevelValue=900;|
Context path from ServletContext: differs from path from bundle: /|#]
[#|2020-06-04T16:35:16.216+0200|INFO|glassfish 6.0|org.glassfish.admingui|_ThreadID=73;_ThreadName=admin-listener(2);_TimeMillis=1591281316216;_LevelValue=800;|
Redirecting to /|#]
[#|2020-06-04T16:35:16.288+0200|INFO|glassfish 6.0|org.glassfish.admingui|_ThreadID=183;_ThreadName=admin-listener(6);_TimeMillis=1591281316288;_LevelValue=800;|
Admin Console: Initializing Session Attributes...|#]