unable to build an addon plugin with 6.20

[jenkins_1]

We have a plugin on top of JSS and are trying to make it use JSS Community Edition 6.20. The current version we use is 6.14. When we build this in our pipeline we get errors. We tried solving them, but so far nothing works. We can start our plugin from the IDE, but we can't build it automatically somehow.

Our manifest has these required plugin specified:
  Require-Bundle: com.jaspersoft.studio;bundle-version="6.20.0",
    com.jaspersoft.studio.server;bundle-version="6.20.0"

I can see they are present, but somehow the plugin can't find them.

The error we get is:

  create.build.script:
  [eclipse.buildScript] Some inter-plug-in dependencies have not been satisfied.
  [eclipse.buildScript] Bundle nl.vanmeijel.jaspersoftstudioaddon:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.server_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.components.customvisualization:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.server_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.data.drivers:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.data_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.data.mongodb:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.data_6.20.0.
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.server_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.data.sql.ui:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.data_6.20.0.
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.data.sql_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.data.sql:
  [eclipse.buildScript]   Optional plug-in org.eclipse.xtext.generator_2.8.4 is not available.
  [eclipse.buildScript]   Optional plug-in org.eclipse.emf.mwe2.launch_0.0.0 is not available.
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.data_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.data:
  [eclipse.buildScript]   Package uses conflict: Require-Bundle: com.jaspersoft.studio; bundle-version="6.20.0"
  [eclipse.buildScript] Bundle com.jaspersoft.studio.doc.samples:
  [eclipse.buildScript]   Host plug-in com.jaspersoft.studio.doc_2.0.1 has not been found.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.doc:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.server_6.20.0.
  [eclipse.buildScript]   Unsatisfied import package com.jaspersoft.studio.server_0.0.0.
  [eclipse.buildScript]   Unsatisfied import package com.jaspersoft.studio.server.model.server_0.0.0.
  [eclipse.buildScript]   Unsatisfied import package com.jaspersoft.studio.server.publish.wizard_0.0.0.
  [eclipse.buildScript]   Unsatisfied import package com.jaspersoft.studio.server.wizard_0.0.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.server.soap:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.server_6.20.0.
  [eclipse.buildScript] Bundle com.jaspersoft.studio.server:
  [eclipse.buildScript]   Missing required plug-in com.jaspersoft.studio.data_6.20.0.
  [eclipse.buildScript] Bundle org.eclipse.emf.common:
  [eclipse.buildScript]   Another singleton version selected: org.eclipse.emf.common_2.26.0.v20220817-1401
  [eclipse.buildScript] Bundle org.eclipse.emf.ecore.xmi:
  [eclipse.buildScript]   Another singleton version selected: org.eclipse.emf.ecore.xmi_2.17.0.v20220817-1334
  [eclipse.buildScript] Bundle org.eclipse.emf.ecore:
  [eclipse.buildScript]   Another singleton version selected: org.eclipse.emf.ecore_2.28.0.v20220817-1401
  
Has anybody experienced something similar? Any help or suggestions will be appreciated.