K2 Connect Error : Values can not be null

You can enable K2 broker error logging to get more detail from the error. Looks like some configuration information is missing.

Hi 992,

Here are some things that you can check 

- Does restarting the K2 Service and K2 connect service helps ?

- Have you set the default destination?

https://help.nintex.com/en-US/K2Connect/UserGuide/5.2/default.htm#Configure_Destinations.html%3FTocPath%3DAdminister%7C_____3

- Have you downloaded the The SAP Netweaver RFC Libraries 

https://help.nintex.com/en-US/K2Connect/UserGuide/5.2/default.htm#Installation_Prerequisites.html%3FTocPath%3DInstall%7C_____1

- Are there any errors seen from the hostserver logs related to this error or from event viewer 

Should you feel that this post is of use and or an accurate solution to the raised question, I kindly encourage you to mark it as such 
using the 'Best Answer', 'Like' andor ‘Me Too’ options.

Cheers,
Kate

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