When a command block is far from the block that he is using like clone command or blockdata /blockdata 208 40 5 {Command:"scoreboard players set @a Tempo 1800"}
Command block is in the -215, -20
it says [19:14:35] Cannot change block outside of the world
Linked issues
duplicates 1
Comments 2
Dupe of MC-32458.
That message means Cannot change block outside of the loaded world