# Unexpected exception retrieving UDT definitions during component startup

**URL:** <https://forum.inductiveautomation.com/t/unexpected-exception-retrieving-udt-definitions-during-component-startup/65563>\
**Category:** Ignition\
**Tags:** ignition81, vision\
**Created:** [October 22, 2022, 8:00am UTC](https://forum.inductiveautomation.com/t/unexpected-exception-retrieving-udt-definitions-during-component-startup/65563 "2022-10-22T08:00:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![SARAVANAN\_G](https://avatars.discourse-cdn.com/v4/letter/s/3be4f8/32.png) [@SARAVANAN\_G](https://forum.inductiveautomation.com/u/SARAVANAN_G)\
**Post date:** [October 22, 2022, 8:00am UTC](https://forum.inductiveautomation.com/t/unexpected-exception-retrieving-udt-definitions-during-component-startup/65563/1 "2022-10-22T08:00:16Z")

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Hi,  
I am getting this error when l logout the vision client launcher. Can you Pls check into this and help me out from this error.  
Please find the below image for your reference.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/0/601b30abe40afca14c95c7d5c68477cfd2e6a3b9.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/1/d1d7c4cfed6accbc579fc4c671f9d5fa7c3a8550.png)

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**Author:** ![Dharani\_T](https://avatars.discourse-cdn.com/v4/letter/d/bc8723/32.png) [@Dharani\_T](https://forum.inductiveautomation.com/u/Dharani_T)\
**Post date:** [October 22, 2022, 8:57am UTC](https://forum.inductiveautomation.com/t/unexpected-exception-retrieving-udt-definitions-during-component-startup/65563/2 "2022-10-22T08:57:27Z")

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Have you written any scripts in startup?  
Is there any other errors displaying the gateway log? (Status-\>Logs)