Scheduled Reminders: lack of default form values leads to SQL syntax error

Jan 16 14:15:01  [info] $Fatal Error Details = Array
(
    [callback] => Array
        (
            [0] => CRM_Core_Error
            [1] => exceptionHandler
        )

    [code] => -2
    [message] => DB Error: syntax error
    [mode] => 16
    [debug_info] => SELECT r.contact_id as contact_id, e.id as entity_id, "civicrm_activity" as entity_table, 2 as action_schedule_id, MAX(reminder.action_date_time) as latest_log_time
FROM civicrm_activity e
INNER JOIN civicrm_activity_contact r ON r.activity_id = e.id AND record_type_id = 1
INNER JOIN civicrm_contact c ON c.id = r.contact_id AND c.is_deleted = 0 AND c.is_deceased = 0 
INNER JOIN civicrm_action_log reminder ON reminder.contact_id = r.contact_id AND
reminder.entity_id          = e.id AND
reminder.entity_table       = 'civicrm_activity' AND
reminder.action_schedule_id = 2
WHERE (e.activity_type_id IN (1)) AND (e.status_id IN (1)) AND (e.is_current_revision = 1 AND e.is_deleted = 0) AND ("20170116141500" <= DATE_SUB(e.activity_date_time, INTERVAL  hour)) AND ('
20170116141500' >= DATE_ADD(e.activity_date_time, INTERVAL 1 hour))
GROUP BY reminder.contact_id, reminder.entity_id, reminder.entity_table
HAVING (TIMESTAMPDIFF(HOUR, latest_log_time, CAST(20170116141500 AS datetime)) >= TIMESTAMPDIFF(HOUR, latest_log_time, DATE_ADD(latest_log_time, INTERVAL  HOUR)))
 [nativecode=1064 ** You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) AND ('20170116141500' >= DATE_AD
D(e.activity_date_time, INTERVAL 1 hour))
GRO' at line 9]
    [type] => DB_Error
    [user_info] => SELECT r.contact_id as contact_id, e.id as entity_id, "civicrm_activity" as entity_table, 2 as action_schedule_id, MAX(reminder.action_date_time) as latest_log_time
FROM civicrm_activity e
INNER JOIN civicrm_activity_contact r ON r.activity_id = e.id AND record_type_id = 1
INNER JOIN civicrm_contact c ON c.id = r.contact_id AND c.is_deleted = 0 AND c.is_deceased = 0 
INNER JOIN civicrm_action_log reminder ON reminder.contact_id = r.contact_id AND
reminder.entity_id          = e.id AND
reminder.entity_table       = 'civicrm_activity' AND
reminder.action_schedule_id = 2
WHERE (e.activity_type_id IN (1)) AND (e.status_id IN (1)) AND (e.is_current_revision = 1 AND e.is_deleted = 0) AND ("20170116141500" <= DATE_SUB(e.activity_date_time, INTERVAL  hour)) AND ('
20170116141500' >= DATE_ADD(e.activity_date_time, INTERVAL 1 hour))
GROUP BY reminder.contact_id, reminder.entity_id, reminder.entity_table
HAVING (TIMESTAMPDIFF(HOUR, latest_log_time, CAST(20170116141500 AS datetime)) >= TIMESTAMPDIFF(HOUR, latest_log_time, DATE_ADD(latest_log_time, INTERVAL  HOUR)))
 [nativecode=1064 ** You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) AND ('20170116141500' >= DATE_AD
D(e.activity_date_time, INTERVAL 1 hour))
GRO' at line 9]
    [to_string] => [db_error: message="DB Error: syntax error" code=-2 mode=callback callback=CRM_Core_Error::exceptionHandler prefix="" info="SELECT r.contact_id as contact_id, e.id as entit
y_id, "civicrm_activity" as entity_table, 2 as action_schedule_id, MAX(reminder.action_date_time) as latest_log_time
FROM civicrm_activity e
INNER JOIN civicrm_activity_contact r ON r.activity_id = e.id AND record_type_id = 1
INNER JOIN civicrm_contact c ON c.id = r.contact_id AND c.is_deleted = 0 AND c.is_deceased = 0 
INNER JOIN civicrm_action_log reminder ON reminder.contact_id = r.contact_id AND
reminder.entity_id          = e.id AND
reminder.entity_table       = 'civicrm_activity' AND
reminder.action_schedule_id = 2
WHERE (e.activity_type_id IN (1)) AND (e.status_id IN (1)) AND (e.is_current_revision = 1 AND e.is_deleted = 0) AND ("20170116141500" <= DATE_SUB(e.activity_date_time, INTERVAL  hour)) AND ('
20170116141500' >= DATE_ADD(e.activity_date_time, INTERVAL 1 hour))
GROUP BY reminder.contact_id, reminder.entity_id, reminder.entity_table
HAVING (TIMESTAMPDIFF(HOUR, latest_log_time, CAST(20170116141500 AS datetime)) >= TIMESTAMPDIFF(HOUR, latest_log_time, DATE_ADD(latest_log_time, INTERVAL  HOUR)))
 [nativecode=1064 ** You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) AND ('20170116141500' >= DATE_ADD(e.activity_date_time, INTERVAL 1 hour))
GRO' at line 9]"]
)


Jan 16 14:15:01  [info] $backTrace = #0 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Error.php(932): CRM_Core_Error::backtrace("backTrace", TRUE)
#1 [internal function](): CRM_Core_Error::exceptionHandler(Object(DB_Error))
#2 /var/www/d7cividev/sites/all/modules/civicrm/packages/PEAR.php(931): call_user_func((Array:2), Object(DB_Error))
#3 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB.php(976): PEAR_Error->PEAR_Error("DB Error: syntax error", -2, 16, (Array:2), "SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#4 /var/www/d7cividev/sites/all/modules/civicrm/packages/PEAR.php(564): DB_Error->DB_Error(-2, 16, (Array:2), "SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#5 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB/common.php(1905): PEAR->raiseError(NULL, -2, NULL, NULL, "SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...", "DB_Error", TRUE)
#6 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB/mysql.php(895): DB_common->raiseError(-2, NULL, NULL, NULL, "1064 ** You have an error in your SQL syntax; check the manual that correspon...")
#7 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB/mysql.php(328): DB_mysql->mysqlRaiseError()
#8 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB/common.php(1216): DB_mysql->simpleQuery("SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#9 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB/DataObject.php(2435): DB_common->query("SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#10 /var/www/d7cividev/sites/all/modules/civicrm/packages/DB/DataObject.php(1627): DB_DataObject->_query("SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#11 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/DAO.php(354): DB_DataObject->query("SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#12 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/DAO.php(1297): CRM_Core_DAO->query("SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...", TRUE)
#13 /var/www/d7cividev/sites/all/modules/civicrm/Civi/ActionSchedule/RecipientBuilder.php(295): CRM_Core_DAO::executeQuery("SELECT r.contact_id as contact_id, e.id as entity_id, \"civicrm_activity\" as...")
#14 /var/www/d7cividev/sites/all/modules/civicrm/Civi/ActionSchedule/RecipientBuilder.php(163): Civi\ActionSchedule\RecipientBuilder->buildRelRepeatPass()
#15 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/BAO/ActionSchedule.php(361): Civi\ActionSchedule\RecipientBuilder->build()
#16 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/BAO/ActionSchedule.php(376): CRM_Core_BAO_ActionSchedule::buildRecipientContacts(1, "20170116141500", (Array:2))
#17 /var/www/d7cividev/sites/all/modules/civicrm/api/v3/Job.php(186): CRM_Core_BAO_ActionSchedule::processQueue(NULL, (Array:2))
#18 /var/www/d7cividev/sites/all/modules/civicrm/Civi/API/Provider/MagicFunctionProvider.php(89): civicrm_api3_job_send_reminder((Array:1))
#19 /var/www/d7cividev/sites/all/modules/civicrm/Civi/API/Kernel.php(161): Civi\API\Provider\MagicFunctionProvider->invoke((Array:9))
#20 /var/www/d7cividev/sites/all/modules/civicrm/Civi/API/Kernel.php(92): Civi\API\Kernel->runRequest((Array:7))
#21 /var/www/d7cividev/sites/all/modules/civicrm/api/api.php(23): Civi\API\Kernel->runSafe("job", "send_reminder", (Array:1), NULL)
#22 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/JobManager.php(134): civicrm_api("job", "send_reminder", (Array:1))
#23 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/JobManager.php(113): CRM_Core_JobManager->executeJob(Object(CRM_Core_ScheduledJob))
#24 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Admin/Page/Job.php(149): CRM_Core_JobManager->executeJobById("9")
#25 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Page/Basic.php(172): CRM_Admin_Page_Job->browse(NULL, NULL)
#26 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Admin/Page/Job.php(136): CRM_Core_Page_Basic->run()
#27 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Invoke.php(310): CRM_Admin_Page_Job->run((Array:3), NULL)
#28 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Invoke.php(84): CRM_Core_Invoke::runItem((Array:13))
#29 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Invoke.php(52): CRM_Core_Invoke::_invoke((Array:3))
#30 /var/www/d7cividev/sites/all/modules/civicrm/drupal/civicrm.module(451): CRM_Core_Invoke::invoke((Array:3))
#31 [internal function](): civicrm_invoke("admin", "job")
#32 /var/www/d7cividev/includes/menu.inc(527): call_user_func_array("civicrm_invoke", (Array:2))
#33 /var/www/d7cividev/index.php(21): menu_execute_active_handler()
#34 {main}