125817 - no subject - We are seeing this new error in a node t

We are seeing this new error in a node that has worked perfectly in the past:

There is a problem with task “<<Task Name>>” in the process “<<Process Model name>>”. The selected report has too many cells to be fetched.
Problem: An error occurred in executing an Activity Class.

Any idea what this might be?...

OriginalPostID-125817