Unhandled Exception Occurred: Looking at error logs and can't figure it out?

Question

Hi everyone,

I'm seeing this new error in Alteryx that I haven't seen before. On a new client machine/recently downloaded their Designer and saw this when I opened the workflow up:

I went to the Error Logs and most of them seem to show this Error message:

Collection was modified; enumeration operation may not execute

Also saw this error message in one of the logs: Object reference not set to an instance of an object.

Can anyone point out what I can do to resolve this? I can barely do any development with this error continuously showing up. Also just reached out to Alteryx Support but not sure how long they'll take.

grazitti_sapna · Answer

Hi @hydrogurl01 , I have faced this issue as well but not as frequently as you are facing. Generally, restarting Alteryx does the trick but if it is frequent I suggest you to reinstall the designer and then try. As you have already raised your concern with Alteryx Support so I suggest you to either wait or try reinstalling the designer.

Thanks.