HP Potion usage in Luminous Stone B1

[ccrazyclown123]

When i was in Luminous Stone B1 i was killing a Jokr Kebing and tried to use an HP Potion but it gave me the Error Code 1806 Message. I'm a lvl 16 Archer on the Apoline Server if that has anything to do with it.

[Aferifax]

I got that in Luminous Stone B1 while fighting the Cave Kebing.

While in battle and trying to use a HP Potion (Tier 1), I received this:
"An unidentified error code has occurred.: 1806"
I heard the usual sound for taking the potion, but no HP increase.

I was on Teva server, also playing an archer.