Fatal error: Uncaught Error: Call to a member function property_info_alter() on null in /var/www/html/sites/all/modules/entityreference/entityreference.module:735 Stack trace: #0 /var/www/html/sites/all/modules/entity/modules/field.info.inc(31): entityreference_field_property_callback(Array, 'node', Array, Array, Array) #1 /var/www/html/sites/all/modules/entity/entity.info.inc(31): entity_metadata_field_entity_property_info() #2 /var/www/html/includes/module.inc(966): entity_entity_property_info() #3 /var/www/html/sites/all/modules/entity/includes/entity.property.inc(37): module_invoke_all('entity_property...') #4 /var/www/html/sites/all/modules/entity/includes/entity.wrapper.inc(617): entity_get_property_info('better_watchdog...') #5 /var/www/html/sites/all/modules/entity/includes/entity.wrapper.inc(613): EntityDrupalWrapper->setUp() #6 /var/www/html/sites/all/modules/entity/entity.module(1451): EntityDrupalWrapper->__construct('better_watchdog...', Object(WatchdogEntity), Array) #7 /var/www/html/sites/all/modules/rules/ in /var/www/html/sites/all/modules/entityreference/entityreference.module on line 735