Hi,
I have read several identical topics but I don't understand how to solve this error.

Failed to create agent because it is not close enough to the NavMesh
(Filename:  Line: 648)
Failed to create agent because it is not close enough to the NavMesh
(Filename:  Line: 648)
Failed to create agent because it is not close enough to the NavMesh
(Filename:  Line: 648)
Failed to create agent because it is not close enough to the NavMesh
(Filename:  Line: 648)
Failed to create agent because it is not close enough to the NavMesh
(Filename:  Line: 648)
Failed to create agent because it is not close enough to the NavMesh​

Can you help me, please?

Thank you. Thank you.

Kill NPC's

It's sad... Anything else?

Nothing

Okay, thank you for your answers.

i had a reply from facepunch that it's indeed related to an NPC that is stuck between the map. i had this issue last month. As @Orange suggested, killing NPC will do the trick. ( don't know what the command for is, but you might be lucky on corrosionhour. )