Guild quest gone from quest log

This morning when I checked we still needed 3 more people to finish solo guild quests to finish our main quest. Now the guild quest has gone from the quest log and also the waiting guild quest has also gone. No one in guild seems to have these showing any more or had any info saying we have received the reward.

Sounds like your guild leader cancelled the quests, so no rewards! Best get on his/her case and find out why, particulary as you were so close to completing it and probably cost you a kings ransom in rescources!