Alteryx Error

[soncoku]

Hi all.
Any ideas why I keep getting this error?
I've been seeing it pretty often. Especially in one specific report (which is the biggest I have right now, about 1.4mb )

[atcodedog05]

Hi @soncoku 

What is the error?

[soncoku]

It kept showing up all day today in that specific report. 
Now I'm trying to recreate it but no luck. 
I will take a screenshot of the error as soon as it appears again

[soncoku]

@atcodedog05