# GatewayException: No session found. You must re-login

**URL:** <https://forum.inductiveautomation.com/t/gatewayexception-no-session-found-you-must-re-login/10887>\
**Category:** Ignition\
**Created:** [December 8, 2015, 2:55am UTC](https://forum.inductiveautomation.com/t/gatewayexception-no-session-found-you-must-re-login/10887 "2015-12-08T02:55:54Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ella\_ramos](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ella_ramos/32/3455_2.png) [@ella\_ramos](https://forum.inductiveautomation.com/u/ella_ramos)\
**Post date:** [December 8, 2015, 2:55am UTC](https://forum.inductiveautomation.com/t/gatewayexception-no-session-found-you-must-re-login/10887/1 "2015-12-08T02:55:54Z")

</div>

What could be the cause of this error on a client?

Here’s the exact error:

```auto
	caused by Exception: Error executing system.db.runPrepQuery(SELECT tooltypeid FROM equipment WHERE equipment = ?, , [HC_VIM05], )
```