Thanks everyone, I did a manual update after allowing the cloudways server to auto-update to 7.2 with ioncube 10.x - hopefully I won't get into this dependency conundrum again.
I did test the upgrade on a staging server first using a dev licence (thanks John and the support team) and all seemed to go well
It also gave me an opportunity to upgrade all of my addons and integrations to their latest versions as well
Slow and steady wins the race apparently... Happy camper.