Issue: Syntax error

Error Info
XenForo_Exception: Database Error: SELECT subscribeid FROM `vw_subscribe` WHERE userid = 281763 AND nodeid = AND nodetypeid = 5 Mysqli prepare error: 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 nodetypeid = 5' at line 1 - vault/core/controller/db/xf.php:173 
Generated By: Budgetadvisoryservice, Today at 4:37 AM

Stack Trace
#0 /vault/core/controller/db/xf.php(254): vw_DB_Controller_XF->throw_error(Object(Zend_Db_Statement_Mysqli_Exception), 'SELECT subscrib...')
#1 /vault/core/model/db/mysql/vw.php(27): vw_DB_Controller_XF->query_first('SELECT subscrib...')
#2 /vault/core/controller/dm/subscribe/vw.php(207): vw_DB_MySQL_Model->select(Array)
#3 /library/vw/XenForo/DataWriter.php(499): vw_DM_Subscribe_Controller->pre_save(true)
#4 /library/XenForo/DataWriter.php(1460): vw_XenForo_DataWriter->_preSave()
#5 /library/vw/XenForo/DataWriter.php(190): XenForo_DataWriter->preSave()
#6 /vault/core/controller/dm/xf.php(382): vw_XenForo_DataWriter->preSaveWithReturn()
#7 /vault/core/controller/ui/watch/vw.php(1404): vw_DM_Controller_XF->pre_save()
#8 /vault/core/controller/ui/discussion/vw.php(1704): vw_UI_Watch_Controller->update(Array, false)
#9 /vault/core/controller/ui/discussion/vw.php(87): vw_UI_Discussion_Controller->posttalk()
#10 /vault/core/controller/ui/discussion/xf.php(72): vw_UI_Discussion_Controller->execute()
#11 /vault/core/view/ui/page/vw.php(285): vw_UI_Discussion_Controller_XF->execute()
#12 /vault/core/controller/ui/page/vw.php(891): vw_UI_Page_View->get_comments(Object(vw_UI_Page_Controller_XF), true)
#13 /vault/core/controller/ui/page/vw.php(181): vw_UI_Page_Controller->comments()
#14 /vault/core/controller/ui/page/xf.php(58): vw_UI_Page_Controller->execute()
#15 /vault/core/controller/ui/stack/vw.php(271): vw_UI_Page_Controller_XF->execute()
#16 /library/vw/XenForo/ControllerPublic/Wiki.php(70): vw_UI_Stack_Controller->execute()
#17 /library/XenForo/FrontController.php(351): vw_XenForo_ControllerPublic_Wiki->actionIndex()
#18 /library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#19 /index.php(13): XenForo_FrontController->run()
#20 {main}
Request State
array(3) {
  ["url"] => string(95) "https://site.com/wiki/Category:xx?do=comments&action=posttalk"
  ["_GET"] => array(2) {
    ["do"] => string(8) "comments"
    ["action"] => string(8) "posttalk"
  }
  ["_POST"] => array(17) {
    ["edittitle"] => string(12) "Just testing"
    ["description"] => string(71) "A test of the functionality of discussions in the wiki, from an iPhone."
    ["message"] => string(163) "A test comment.

Here is a picture of me, hard at work on testing the wiki:

[ATTACH=full]62106[/ATTACH] 

... and as a thumbnail:

[ATTACH]62106[/ATTACH] "
    ["_xfRelativeResolver"] => string(91) "https://site.com /wiki/Category:xxx?do=comments&action=talk"
    ["attachment_hash"] => string(32) "bc07cb8253f092aa2c1df7f88625c6d3"
    ["posthash"] => string(0) ""
    ["poststarttime"] => string(0) ""
    ["parseurl"] => string(1) "1"
    ["signature"] => string(1) "1"
    ["notifytype"] => string(1) "0"
    ["sub_options"] => array(2) {
      ["item_edits"] => string(1) "1"
      ["item_comments"] => string(1) "1"
    }
    ["sbutton"] => string(8) "Post Now"
    ["_xfToken"] => string(8) "********"
    ["do"] => string(8) "comments"
    ["action"] => string(8) "posttalk"
    ["loggedinuser"] => string(6) "281763"
    ["bb2_screener_"] => string(24) "xxx"
  }
}