Cron import removes product table from database

Hello David, hope you are well.

Have just run into a problem after moving my sites to a new host 3 days ago.
There are multiple installs.
Since the move, everytime one install updates products from cron I'm left with an empty site, no products!

Looking at the database I see the product table has been deleted during the update.
If I re-install DB from backup, re-run the cron, it works fine. Not sure if it will re-run again without the same problem as I only update weekly.

I ran DB repair on all installs after the first occurrence 3 days ago , but it hasn't made any difference. I am seeing error logs, but also had them at the previous host were they updated fine, so not sure if the logs are related to the issue.

Here's a snippet from the log, same error logs found on all installs:

{code saved}

Any idea what could be causing the updates to fail ?
Also, would it be possible to run these installs on PHP 7.0 now? (existing 5.6)

Regards,
G.