Factorio Forums

See screenshot below, materials, construction bots and personal roboport are all available, but blueprint is not being built.

Game started version 0.13.0
Current version 0.13.1

Save game attached

They are not completely stuck, you overloaded the job queue with all the ghosts in the south east. The game can only track 600 jobs at a time. Build more robots or build less ghosts.
NaB