Hextech Crafting Ate My Blue Essence

I went to craft my level 7 mastery for a champion, but when I would press craft I would receive a message saying to restart the client. I restarted my client and the blue essence that was required to craft level 7 was subtracted from my blue essence but my champion is still level 6 and I still have all 3 tokens. Rito please give my blue essence back