I restored to an earlier version and run the upgrade again, copying herewith log:
[escijour@srv36 public_html]$ php tools/upgrade.php check
Code version: 3.1.2.1
Database version: 2.4.8.5
Latest version: 3.1.2.2
Database version is older than code version
Run “tools/upgrade.php upgrade” to update
[escijour@srv36 public_html]$ php tools/upgrade.php upgrade
[pre-install]
[load: upgrade.xml]
[version: 3.1.2.1]
[code: Installer Installer::checkPhpVersion]
[code: Installer Installer::syncSeriesAssocType]
[data: dbscripts/xml/upgrade/2.4.0_preupdate_usageStatistics.xml (skipped)]
[data: dbscripts/xml/upgrade/2.4.0_preupdate_usageStatistics2.xml (skipped)]
[code: Installer Installer::removeReviewEntries]
[data: dbscripts/xml/upgrade/3.0.0_preupdate.xml]
[data: dbscripts/xml/upgrade/3.0.0_adaptTimedViews.xml]
[data: dbscripts/xml/upgrade/3.0.0_adaptReferrals.xml]
[data: dbscripts/xml/upgrade/3.0.0_adaptBooksForReview.xml]
[data: dbscripts/xml/upgrade/remove_timed_views_bots.xml]
[data: dbscripts/xml/upgrade/3.0.0_preupdate_commentsToEditor.xml]
[data: dbscripts/xml/upgrade/3.1.0_preupdate_review_assignments.xml]
[data: dbscripts/xml/upgrade/3.1.0_preupdate_notes.xml]
[data: dbscripts/xml/upgrade/3.1.0_preupdate_payments.xml]
[data: dbscripts/xml/upgrade/3.1.1_preupdate_citations.xml]
[data: dbscripts/xml/upgrade/3.1.2_preupdate_user_author_names.xml]
[schema: lib/pkp/xml/schema/common.xml]
[schema: lib/pkp/xml/schema/log.xml]
[schema: lib/pkp/xml/schema/announcements.xml]
[schema: lib/pkp/xml/schema/scheduledTasks.xml]
[schema: lib/pkp/xml/schema/temporaryFiles.xml]
[schema: lib/pkp/xml/schema/metadata.xml]
[schema: lib/pkp/xml/schema/reviews.xml]
[schema: lib/pkp/xml/schema/reviewForms.xml]
[schema: lib/pkp/xml/schema/controlledVocab.xml]
[schema: lib/pkp/xml/schema/submissions.xml]
[schema: lib/pkp/xml/schema/submissionFiles.xml]
[schema: lib/pkp/xml/schema/categories.xml]
[schema: lib/pkp/xml/schema/notes.xml]
[schema: lib/pkp/xml/schema/genres.xml]
[schema: lib/pkp/xml/schema/tombstone.xml]
[schema: lib/pkp/xml/schema/rolesAndUserGroups.xml]
[schema: lib/pkp/xml/schema/metrics.xml]
[schema: lib/pkp/xml/schema/views.xml]
[schema: lib/pkp/xml/schema/libraryFiles.xml]
[schema: lib/pkp/xml/schema/navigationMenus.xml]
[schema: dbscripts/xml/ojs_schema.xml]
[data: dbscripts/xml/indexes.xml]
[code: Installer Installer::installDefaultNavigationMenus]
[code: Installer Installer::migrateStaticPagesToNavigationMenuItems]
[code: Installer Installer::migrateSRLocale]
[code: Installer Installer::migrateUserAndAuthorNames]
[code: Installer Installer::concatenateIntoAbout]
[code: Installer Installer::concatenateIntoMasthead]
[code: Installer Installer::migrateCounterPluginUsageStatistics]
[code: Installer Installer::migrateTimedViewsUsageStatistics]
[code: Installer Installer::migrateDefaultUsageStatistics (skipped)]
[data: dbscripts/xml/upgrade/2.4.0_postUsageStatsMigration.xml (skipped)]
[data: dbscripts/xml/upgrade/2.4.0_postUsageStatsMigration2.xml (skipped)]
[data: dbscripts/xml/upgrade/2.4.0_postCounterMigration.xml]
[data: dbscripts/xml/upgrade/2.4.0_postTimedViewsMigration.xml]
[data: dbscripts/xml/upgrade/3.0.0_change_assoc_type.xml]
[data: dbscripts/xml/upgrade/3.0.0_change_assoc_type_metrics.xml]
[data: dbscripts/xml/upgrade/3.0.0_settings.xml]
[code: Installer Installer::installDefaultGenres]
[code: Installer Installer::migrateArticleMetadata]
[data: dbscripts/xml/upgrade/3.0.0_update.xml]
[code: Installer Installer::clearDataCache]
[code: Installer Installer::migrateUserRoles]
[code: Installer Installer::fixReviewForms]
[code: Installer Installer::htmlifyEmailTemplates]
[note: docs/release-notes/README-BEACON]
[code: Installer Installer::installEmailTemplate]
[code: Installer Installer::installEmailTemplate]
[code: Installer Installer::installEmailTemplate]
[code: Installer Installer::installEmailTemplate]
[code: Installer Installer::installEmailTemplate]
[code: Installer Installer::installEmailTemplate]
[data: dbscripts/xml/upgrade/3.0.0_scheduledTasks.xml]
[code: Installer Installer::localizeCustomBlockSettings]
[code: Installer Installer::convertEditorDecisionNotes]
[code: Installer Installer::convertQueries]
[code: Installer Installer::migrateFiles]
[code: Installer Installer::convertSupplementaryFiles]
[code: Installer Installer::provideSupplementaryFilesForReview]
[code: Installer Installer::setFileUploader]
[code: Installer Installer::setFileName]
[data: dbscripts/xml/upgrade/3.0.0_postupdate.xml]
[data: dbscripts/xml/upgrade/3.0.0_pubId_settings.xml]
[data: dbscripts/xml/upgrade/3.0.0_postupgrade_galley_files.xml]
[data: dbscripts/xml/upgrade/3.0.0_postupgrade_metrics.xml]
[data: dbscripts/xml/upgrade/3.0.0_issue_settings.xml]
[data: dbscripts/xml/upgrade/3.0.0_submission_settings.xml]
[data: dbscripts/xml/upgrade/3.0.0_review_method.xml]
[data: dbscripts/xml/upgrade/3.0.0_edit_decisions.xml]
[data: dbscripts/xml/upgrade/3.0.1_update.xml]
[code: Installer Installer::convertCommentsToEditor]
[note: docs/release-notes/README-3.0]
[note: docs/release-notes/README-3.0.1]
[data: dbscripts/xml/upgrade/3.0.2_update.xml]
[note: docs/release-notes/README-3.0.2]
[code: Installer Installer::moveReviewerFiles]
[code: Installer Installer::fixAuthorGroup]
[data: dbscripts/xml/upgrade/3.0.0_reviewer_files.xml]
[code: Installer Installer::removeCancelledReviewAssignments]
[escijour@srv36 public_html]$