After re-indexing, 'no application links '

[lemoene Smit]

Hi All, avid Jira (v6.4.3) user and fan, now reluctant admin newb (original implementer is not available)

I switched to FireFox today and could not install Capture, due to 'corrupt download'. It works fine in Chrome. On the Jira Add-ons page I noticed some requiring upgrades. I started upgrading from the top of the page, the first completyed but i was prompted to do a re-index, which I did. A lazy Saturday afternoon, I did not make any backups anywhere along the way...

After the re-index, the Add-on page flashes up briefly before displaying  /plugins/servlet/applinks/listApplicationLinks:
You have no application links right now. To create an application link begin by entering the URL of application you wish to link to.

None of our add-ons, Capture, Agile etc are available in the UI.
We restored from a system backup, importing XML.zip but the issue persists.

• How do i determine what the application links are to be entered?
  
  
• Should we simply re-install the add-ons?

Much appreciated
lemoene

Meaningful from the logs:

2020-06-27 17:08:13,275 pool-15-thread-1 ERROR lemoene 1027x6146629x1 2zo5aa 197.245.176.218,127.0.0.1 /rest/plugins/self-update/1.0/ [plugin.osgi.factory.OsgiPluginInstalledHelper] Cannot determine required plugins, cannot resolve bundle 'com.pyxis.greenhopper.jira'

2020-06-27 17:08:13,277 pool-15-thread-1 ERROR lemoene 1027x6146629x1 2zo5aa 197.245.176.218,127.0.0.1 /rest/plugins/self-update/1.0/ [plugin.osgi.factory.OsgiPluginInstalledHelper] Cannot determine required plugins, cannot resolve bundle 'com.soyatec.jira.plugins.jira-ganttchart-project'

2020-06-27 17:08:13,703 pool-15-thread-1 ERROR lemoene 1027x6146629x1 2zo5aa 197.245.176.218,127.0.0.1 /rest/plugins/self-update/1.0/ [plugin.osgi.factory.OsgiPluginInstalledHelper] Cannot determine required plugins, cannot resolve bundle 'com.atlassian.upm.atlassian-universal-plugin-manager-plugin'

2020-06-27 17:08:13,859 pool-15-thread-1 ERROR lemoene 1027x6146629x1 2zo5aa 197.245.176.218,127.0.0.1 /rest/plugins/self-update/1.0/ [plugin.osgi.factory.OsgiPlugin] Detected an error (BundleException) enabling the plugin 'com.pyxis.greenhopper.jira' : Unresolved constraint in bundle com.pyxis.greenhopper.jira [151]: Unable to resolve 151.0: missing requirement [151.0] package; (package=com.atlassian.upm.api.license) [caused by: Unable to resolve 165.0: missing requirement [165.0] package; (&(package=com.atlassian.jira.config.properties)(version>=7.9.0))].  This error usually occurs when your plugin imports a package from another bundle with a specific version constraint and either the bundle providing that package doesn't meet those version constraints, or there is no bundle available that provides the specified package. For more details on how to fix this, see https://developer.atlassian.com/x/mQAN

2020-06-27 17:08:13,861 pool-15-thread-1 ERROR lemoene 1027x6146629x1 2zo5aa 197.245.176.218,127.0.0.1 /rest/plugins/self-update/1.0/ [plugin.osgi.factory.OsgiPlugin] Detected an error (BundleException) enabling the plugin 'com.soyatec.jira.plugins.jira-ganttchart-project' : Unresolved constraint in bundle com.soyatec.jira.plugins.jira-ganttchart-project [152]: Unable to resolve 152.0: missing requirement [152.0] package; (package=com.atlassian.upm.api.license) [caused by: Unable to resolve 165.0: missing requirement [165.0] package; (&(package=com.atlassian.jira.config.properties)(version>=7.9.0))].  This error usually occurs when your plugin imports a package from another bundle with a specific version constraint and either the bundle providing that package doesn't meet those version constraints, or there is no bundle available that provides the specified package. For more details on how to fix this, see https://developer.atlassian.com/x/mQAN

2020-06-27 17:08:14,133 pool-15-thread-1 ERROR lemoene 1027x6146629x1 2zo5aa 197.245.176.218,127.0.0.1 /rest/plugins/self-update/1.0/ [plugin.osgi.factory.OsgiPlugin] Detected an error (BundleException) enabling the plugin 'com.atlassian.upm.atlassian-universal-plugin-manager-plugin' : Unresolved constraint in bundle com.atlassian.upm.atlassian-universal-plugin-manager-plugin [165]: Unable to resolve 165.0: missing requirement [165.0] package; (&(package=com.atlassian.jira.config.properties)(version>=7.9.0)).  This error usually occurs when your plugin imports a package from another bundle with a specific version cons: