Factorio Forums

The bug is that there's a missing string for "Going back to roboport" and instead some other placeholder string is used.

After putting the stone stack in the logistic trash slots this happens:
1) The robots start exiting the roboport and say "Taking item from player" (OK)
2) After taking the item they fly towards the storage chest and say "Storing item in system" (Also OK)
3) Finally, after putting the stones in the chest they head back to the roboport but the message is now "Taking item from player" - which doesn't make sense.

This also happens earlier when the player receives a belt from a robot.

Finally, it should be noted that this issue does not happen in the construction bot tutorial.

Thanks for the report.
I added the "returning to roboport" state for when they are clearing stones from trash, but did not for when player is requesting belts, because in that case it doesn't normally happen and I am lazy (and also tutorials will probably be worked on more for future updates)