Occasional blank white pages –-php7 --wpredis

Have been experiencing issues with several EE –-php7 --wpredis sites that show occasional blank pages. Clients and/or other users have been flagging the blank pages.

Resaving the specific pages or purging cache via NGINX Helper solves the issue.

Error logs don’t really give any sense of what may be going on.

Sites run great otherwise. They are pretty well coded and relatively lean from plugin standpoint.

Anyone else experiencing ongoing caching issues?