Status Check is NULL

I ran the captchamonitor #60 (closed) with 50 websites from Alexa Top sites, 500 from Moz500 site and this list: #83 (comment 2744602), but noticed status_check of the Analyze_completed returning NULL for websites that have status: 403

analyze_completed_202107181730.html

Couldn't export the fetch_completed file due to OutOfMemoryError: Java heap space