Below you will see some check results, which may result various errors in your phpVMS v7
If you have anything greater than 0 (zero) here, specially in Pirep checks most likely you will have "unable to get property ... of non-object" errors.
Flight and Subfleet checks may be tolerable up to a point, but they carry the same risk as Pireps too.
Acars entry counts is just for info, they are harmless but they are using up database space for no good use.
You need to fix those errors via your database workbench (like phpMyAdmin etc) if necessary, this page only gives you relevant ID's to check manually (or to use in your SQL Queries), it DOES NOT offer any "one click" fixes.
MISSING means either you deleted those records for some reason or they are not properly imported from your old install (v2, v5, v7, VAM etc).