Fatal error: Uncaught Error: Call to undefined function lock_may_be_available() in /data/web/virtuals/151222/virtual/www/includes/lock.inc:146 Stack trace: #0 /data/web/virtuals/151222/virtual/www/sites/all/modules/rules/rules.module(368): lock_acquire('rules_get_cache...', 60) #1 /data/web/virtuals/151222/virtual/www/sites/all/modules/rules/rules.module(1026): rules_get_cache('event_watchdog') #2 /data/web/virtuals/151222/virtual/www/sites/all/modules/rules/modules/events.inc(180): rules_invoke_event('watchdog', Array) #3 /data/web/virtuals/151222/virtual/www/includes/module.inc(926): rules_watchdog(Array) #4 /data/web/virtuals/151222/virtual/www/includes/bootstrap.inc(1997): module_invoke('rules', 'watchdog', Array) #5 /data/web/virtuals/151222/virtual/www/includes/errors.inc(210): watchdog('php', '%type: !message...', Array, 3) #6 /data/web/virtuals/151222/virtual/www/includes/bootstrap.inc(2594): _drupal_log_error(Array, true) #7 [internal function]: _drupal_exception_handler(Object(Error)) #8 {main} thrown in /data/web/virtuals/151222/virtual/www/includes/lock.inc on line 146