Okay, I don’t see any issues with your log at all. The server log…..lots of chunk errors. Unfortunately, it does not record the process of requesting a quest but I did see at some point you reset the quests, I’m assuming to try and get another quest to show up. I have to assume it is one of the mods having done this….there are 8 mods loaded. The only way to fix this is a tedious task. You need to wipe the server and start over a vanilla game, using the same seed name. Go in that game and verify that you are getting all the quests. Then you install one mod at a time, verifying after each install that the quests are okay. Eventually you should find the offending mod. Your current seed is corrupted and the 2 things that cause this are directly and indirectly caused by mods. Mods or combo of certain mods can make changes to the game to corrupt the seed or mods create issues that cause the server to crash thereby corrupting the seed. If you’re lucky, it was a server crash and reinstalling all fresh files will fix things for you. Good luck!