Sometimes when using /effect in order to give yourself an effect, the command displays this message even if successful:
An unexpected error occurred while attempting to perform the commandLinked issues
Comments 3
Most of my bugs are Duplicates, and I often make them by coincidence.
I am using the search function, but it appears that nothing has reported about it yet [it says No Issues Found], and thus I go ahead, but later on, it becomes a Duplicate!
Duplicate of MC-132282.
Please use the search function next time.