DISPLAY_ERRORS=true /usr/share/tuleap/src/utils/php-launcher.sh plugins/mediawiki/bin/clean-unused-db.php
info [MW Purge] Start purge
info [MW Purge] Start purge of 147 used but empty mediawiki on projects which are not defined as template
info [MW Purge] Found candidate tuleap_mediawiki
info [MW Purge] [DB] Attempt to purge tables in central database for 136
PHP Fatal error:  Uncaught ParagonIE\EasyDB\Exception\InvalidIdentifier: Separators (.) are not permitted. in /usr/share/tuleap/src/vendor/paragonie/easydb/src/EasyDB.php:293
Stack trace:
#0 /usr/share/tuleap/plugins/mediawiki/include/Maintenance/CleanUnusedDao.php(122): ParagonIE\EasyDB\EasyDB->escapeIdentifier()
#1 /usr/share/tuleap/plugins/mediawiki/include/Maintenance/CleanUnusedDao.php(64): Tuleap\Mediawiki\Maintenance\CleanUnusedDao->dropTablesInCentralDatabase()
#2 /usr/share/tuleap/plugins/mediawiki/include/Maintenance/CleanUnused.php(195): Tuleap\Mediawiki\Maintenance\CleanUnusedDao->purge()
#3 /usr/share/tuleap/plugins/mediawiki/include/Maintenance/CleanUnused.php(168): Tuleap\Mediawiki\Maintenance\CleanUnused->purgeOneProject()
#4 /usr/share/tuleap/plugins/mediawiki/include/Maintenance/CleanUnused.php(101): Tuleap\Mediawiki\Maintenance\CleanUnused->purgeUsedServicesEmptyWikiForAllProjectsExceptTemplate()
#5 /usr/share/tuleap/plugins/mediawiki/bin/clean-unused-db.php(106): Tuleap\Mediawiki\Maintenance\CleanUnused->purge()
#6 {main}
  thrown in /usr/share/tuleap/src/vendor/paragonie/easydb/src/EasyDB.php on line 293