Has anyone had this issue with warcraftlogs? It's happened twice for me now where I can log all the fights just fine but when I go to upload it, there will be one boss that is set as 'invalid log' and doesn't have the kill on it, even though he was killed.

Tried searching around for an answer/reason/solution but can't seem to find one. Just curious what's causing it or if there's a fix to it. Thanks.