Exception calling 'theme_boost_union_before_session_start'

• line 200 of /cache/classes/factory.php: call to core_cache\factory->create_definition()
• line 190 of /cache/classes/cache.php: call to core_cache\factory->create_cache_from_definition()
• line 2467 of /theme/boost_union/locallib.php: call to core_cache\cache::make()
• line 862 of /theme/boost_union/lib.php: call to theme_boost_union_manipulate_hooks()
• line 900 of /lib/setup.php: call to theme_boost_union_before_session_start()
• line 747 of /mnt/efs/tenants/moodleconfigs/russell.poodll.com.php: call to require_once()
• line 40 of /var/www/html/moodle-2025-12-01/config.php: call to require_once()
• line 25 of /var/www/html/moodle-2025-12-01/mod/book/tool/print/index.php: call to require()

Automatically releasing Redis cache lock: 11-de56e029215ee566be22b801eef2eecf (92780a482a5cd6fcf7ef561d9e4e3619) - did somebody forget to call release_lock()?

• line 712 of /cache/stores/redis/lib.php: call to debugging()
• line 185 of /lib/classes/shutdown_manager.php: call to cachestore_redis->shutdown_release_locks()
• line ? of unknownfile: call to core_shutdown_manager::shutdown_handler()