Blocks 🐛 Existing menu links show validation issues on migration (and ALL menu links pointing to node translations are invalid) Needs work if it will solved by menu link migration derivatives.
For being able to properly migrate menu links (without depending on every content entities' migration), we should be able to create stub menu links.
Right now, this is blocked by the Route migrateprocess plugin, because it assumes that the $options variable it populates form the input value array is an array.
Before merging with $route['options], check whether the local $options variable is an array or not.
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
Patch was no longer applying to 11.x so I converted it into an MR with a really small change for it to apply.
Feedback from #13 still needs addressing.