Keep getting "You declined party invite" message

Also, a message came up saying [Playername] declined your invite, I haven't invited or been invited to any parties.

Time: 12 GMT
Frequency: 3 times
World name: Adamantoise
Character name: Alzar Highstar
NPC name:
Monster name:
Class/Level: 50 Black Mage
Party or solo: Solo
In-game time: 7:00 (estimated)
Area and coordinates: South Shroud

I was doing the quest "The past is a story we never tell" if that helps? I've messaged the person I apparently invited (according to my chatbox) and they said they never got one.

This has happened to myself on 12/10/14 between 4:00 - 5:00AM EST Mateus Server Jessica Dawn and I was solo in South Shroud same quest and everything