Test data won't load

Test data won't load

I am using a Flow to receive orders from WooCommerce and add them to a Zoho Creator app.
I recently received an order which failed, and when attempting to test the order I found that it just shows a loading animation and shows up in the history as "queued."
This order is a particularly large one, about 750kb of data, but according to this community post and (I think) this knowledge base article the size limit should be 2mb. Other previous orders still work fine, and even after stripping away any actions that use the trigger data the test still does not run.
Any ideas as to why this might be happening?