map_freeblock_timer error

[pajodex]

Hi, 

Can somebody explain this error to me?

[Error]: map_freeblock_timer: block_free_lock(1) is invalid.
[Error]: map_freeblock_timer: block_free_lock(2) is invalid.
[Error]: map_freeblock_timer: block_free_lock(5) is invalid.

I'm getting those error 'sometimes' after I summon my clones using a custom clone skill.

Is this error somehow dangerous? or what? I'm not really good at this stuff.

 

[Ice Bear]

map_freeblock_unlock(); is the answer