Aggiornamento fallito - Plone 4.3.7 a Plone 5.0

Question

Sto provando ad aggiornare Plone 4.3.7 a Plone 5.0 tramite lo strumento portal_migration e riscontrare il seguente errore. qualche idea? Questo è un sito semplice (senza componenti aggiuntivi), ma risale a Plone 2.x, quindi potrebbe esserci qualche vecchio passato di cui mi sono dimenticato.

uscita di strumento di aggiornamento:

Dry run selected. 
Starting the migration from version: 4311 
Ran upgrade step: Miscellaneous 
Role/permission map imported. 
Archetype tool imported. 
Step languagetool has an invalid import handler 
Step kupu-setup has an invalid import handler 
Ran upgrade step: Run to50alpha3 upgrade profile 
Ran upgrade step: Upgrade editing control panel settings 
Ran upgrade step: Upgrade maintenance control panel settings 
Ran upgrade step: Upgrade navigation control panel settings 
Ran upgrade step: Upgrade search control panel settings 
Ran upgrade step: Upgrade site control panel settings 
Role/permission map imported. 
Skins tool imported. 
Archetype tool imported. 
Step languagetool has an invalid import handler 
Step kupu-setup has an invalid import handler 
Ran upgrade step: Run to50beta1 upgrade profile 
Ran upgrade step: Upgrade markup control panel settings 
Ran upgrade step: Upgrade mail control panel settings 
Ran upgrade step: Upgrade security control panel settings 
Upgrade aborted. Error: 
Traceback (most recent call last): 
    File "/usr/local/Plone/buildout-cache/eggs/Products.CMFPlone-5.0-py2.7.egg/Products/CMFPlone/MigrationTool.py", line 257, in upgrade 
    step['step'].doStep(setup) 
    File "/usr/local/Plone/buildout-cache/eggs/Products.GenericSetup-1.8.0-py2.7.egg/Products/GenericSetup/upgrade.py", line 166, in doStep 
    self.handler(tool) 
    File "/usr/local/Plone/buildout-cache/eggs/plone.app.upgrade-1.3.18-py2.7.egg/plone/app/upgrade/v50/betas.py", line 63, in upgrade_portal_language 
    lang_settings.use_content_negotiation = portal_languages.use_content_negotiation 
AttributeError: use_content_negotiation 
Starting upgrade of core addons. 
Done upgrading core addons. 
End of upgrade path, migration has finished 
The upgrade path did NOT reach current version 
Migration has failed 
Dry run selected, transaction aborted 

Se cerco solo di visualizzare il sito stesso, vedo una pagina vuota con questo messaggio di errore:

KeyError('Interface `Products.CMFPlone.interfaces.controlpanel.ILanguageSchema` 
defines a field `available_languages`, for which there is no record.',) 
(Also, the following error occurred while attempting to render the 
standard error message, please see the event log for full details: 
Interface `Products.CMFPlone.interfaces.controlpanel.ILanguageSchema` 
defines a field `available_languages`, for which there is no record.) 

Alla console modalità di debug, ho vedi ripetuti messaggi di errore come questo:

2015-10-09 13:52:28 INFO plone.app.upgrade Dry run selected. 
2015-10-09 13:52:28 INFO plone.app.upgrade Starting the migration from version: 4311 
2015-10-09 13:52:28 INFO plone.app.upgrade Ran upgrade step: Miscellaneous 
2015-10-09 13:52:28 INFO Products.GenericSetup.tool Importing profile profile-plone.app.upgrade.v50:to50alpha3 with dependency strategy upgrade. 
2015-10-09 13:52:28 INFO Products.GenericSetup.tool Applying main profile profile-plone.app.upgrade.v50:to50alpha3 
2015-10-09 13:52:29 INFO GenericSetup.rolemap Role/permission map imported. 
/usr/local/Plone/buildout-cache/eggs/Products.CMFCore-2.2.10-py2.7.egg/Products/CMFCore/DirectoryView.py:493: UserWarning: DirectoryView plone_deprecated refers to a non-existing path 'Products.CMFPlone:skins/plone_deprecated' 
    (self.id, reg_key), UserWarning) 
/usr/local/Plone/buildout-cache/eggs/Products.CMFCore-2.2.10-py2.7.egg/Products/CMFCore/DirectoryView.py:493: UserWarning: DirectoryView plone_styles refers to a non-existing path 'Products.CMFPlone:skins/plone_styles' 
    (self.id, reg_key), UserWarning) 
/usr/local/Plone/buildout-cache/eggs/Products.CMFCore-2.2.10-py2.7.egg/Products/CMFCore/DirectoryView.py:493: UserWarning: DirectoryView classic_ecmascript refers to a non-existing path 'plonetheme.classic:skins/classic_ecmascript' 
    (self.id, reg_key), UserWarning) 
2015-10-09 13:52:29 INFO GenericSetup.archetypetool Archetype tool imported. 
2015-10-09 13:52:29 ERROR GenericSetup Step languagetool has an invalid import handler 
2015-10-09 13:52:29 ERROR GenericSetup Step kupu-setup has an invalid import handler 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Run to50alpha3 upgrade profile 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade editing control panel settings 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade maintenance control panel settings 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade navigation control panel settings 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade search control panel settings 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade site control panel settings 
2015-10-09 13:52:29 INFO Products.GenericSetup.tool Importing profile profile-plone.app.upgrade.v50:to50beta1 with dependency strategy upgrade. 
2015-10-09 13:52:29 INFO Products.GenericSetup.tool Applying main profile profile-plone.app.upgrade.v50:to50beta1 
2015-10-09 13:52:29 INFO GenericSetup.rolemap Role/permission map imported. 
2015-10-09 13:52:29 INFO GenericSetup.skins Skins tool imported. 
2015-10-09 13:52:29 INFO GenericSetup.archetypetool Archetype tool imported. 
2015-10-09 13:52:29 ERROR GenericSetup Step languagetool has an invalid import handler 
2015-10-09 13:52:29 ERROR GenericSetup Step kupu-setup has an invalid import handler 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Run to50beta1 upgrade profile 
2015-10-09 13:52:29 ERROR PortalTransforms Cannot register transform html-to-captioned (ImportError), using BrokenTransform: Error 
No module named html2captioned 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade markup control panel settings 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade mail control panel settings 
2015-10-09 13:52:29 INFO plone.app.upgrade Ran upgrade step: Upgrade security control panel settings 
2015-10-09 13:52:29 ERROR plone.app.upgrade Upgrade aborted. Error: 
Traceback (most recent call last): 
    File "/usr/local/Plone/buildout-cache/eggs/Products.CMFPlone-5.0-py2.7.egg/Products/CMFPlone/MigrationTool.py", line 257, in upgrade 
    step['step'].doStep(setup) 
    File "/usr/local/Plone/buildout-cache/eggs/Products.GenericSetup-1.8.0-py2.7.egg/Products/GenericSetup/upgrade.py", line 166, in doStep 
    self.handler(tool) 
    File "/usr/local/Plone/buildout-cache/eggs/plone.app.upgrade-1.3.18-py2.7.egg/plone/app/upgrade/v50/betas.py", line 63, in upgrade_portal_language 
    lang_settings.use_content_negotiation = portal_languages.use_content_negotiation 
AttributeError: use_content_negotiation 
2015-10-09 13:52:29 INFO plone.app.upgrade Starting upgrade of core addons. 
2015-10-09 13:52:29 INFO Products.GenericSetup.tool No upgrades available for profile Products.CMFEditions:CMFEditions. Profile stays at version ('4',). 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile Products.CMFPlacefulWorkflow:CMFPlacefulWorkflow is unknown, refusing to upgrade. 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.contenttypes:default is unknown, refusing to upgrade. 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.dexterity:default is unknown, refusing to upgrade. 
2015-10-09 13:52:29 INFO Products.GenericSetup.tool No upgrades available for profile plone.app.discussion:default. Profile stays at version ('102',). 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.event:default is unknown, refusing to upgrade. 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.iterate:plone.app.iterate is unknown, refusing to upgrade. 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.multilingual:default is unknown, refusing to upgrade. 
2015-10-09 13:52:29 INFO Products.GenericSetup.tool No upgrades available for profile plone.app.querystring:default. Profile stays at version ('11',). 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.theming:default is unknown, refusing to upgrade. 
2015-10-09 13:52:29 WARNING Products.GenericSetup.tool Version of profile plone.app.users:default is unknown, refusing to upgrade. 
2015-10-09 13:52:29 INFO plone.app.upgrade Done upgrading core addons. 
2015-10-09 13:52:29 INFO plone.app.upgrade End of upgrade path, migration has finished 
2015-10-09 13:52:29 ERROR plone.app.upgrade The upgrade path did NOT reach current version 
2015-10-09 13:52:29 ERROR plone.app.upgrade Migration has failed 
2015-10-09 13:52:29 INFO plone.app.upgrade Dry run selected, transaction aborted 

Answer 1

Sono installati prodotti di terze parti? Forse LinguaPlone? La parte importante qui è AttributeError: use_content_negotiation, quindi sembra che la migrazione sia bloccata da qualche parte in Products.PloneLanguageTool.

Si può provare a "aggiornare" l'oggetto portal_languages in ZMI da un nuovo sito Plone creato nella stessa istanza. O disinstallare LinguaPlone prima della migrazione se possibile (es: non c'è troppo contenuto che lo usa).