More than 1.2 million junk messages appeared in the server logs.

Nav mesh spam is not a new thing. It has been so common at times even before our library started, that there are plugins to get rid of the errors.

I need more information to be of any help here though. Which boss is throwing the error, what you've found and tried, any details that give me something to work with.

Narrow down which boss is throwing the error and look at what their spawn point(s) is/are and we can go from there.

Hi there, 
hope its okay i add to this post since i'am having the same issue -
proceduralmap
size: 4800
seed: 622707043

out-of-the-box configuration result:
endless spam from this plugin, disabled plugin = spam stopped.
 

Hi, this message says that you have one or more NPCs on a server that was hosted in a place where there is no navigation grid. But according to the configuration, it should appear exactly there, and according to the configuration it is indicated that it is not static and should move, so it tries to start moving every time, but it cannot because it does not have a navigation grid. This is what the message in the log file warns you about. 

This must be fixed. Because it also causes a high load on the server.

First you need to find the file or files that cause this message. How to do this, you can simply turn off or turn on the files one by one and download the plugin, depending on whether the message data is present or not after the plugin is fully loaded. 

Next, when you have found such a file, you need to find which preset from this file creates such messages. In the same way as before, each preset can be turned on or off.

As soon as you find the file and inside it which preset creates such messages, then you can see how the spawn of this preset is configured, if it is a point-by-point spawn, then you need to find the point at which such a problem is created and delete it or move it to another location. If a random spawn is set up, then you should use a point-by-point spawn to avoid getting into such a problem. It is also worth paying attention to the choice of the navigation grid for this preset of the NPC, perhaps the choice of a different navigation grid is configured, unlike what would be necessary for this location.

I understand what the issue is, but this happens using your plugin’s default configuration on a standard procedural map. That means it's not a user error. I’d appreciate it if you could update the config or plugin logic to avoid spawning NPCs where no navmesh exists, since this impacts performance and usability out of the box.

I can't prevent spawn in these places. I can edit the data file, although the server administration is responsible for configuring the settings files, but I can still do this so that there are no such moments in the default configuration. But for this, I need at least the name of the file in which this happens, because at the moment I do not receive these messages with the default configuration. I left the server turned on yesterday and it worked for a day to test this, and I have not received a single such message in the last 24 hours. 

There are several possible reasons why this happens.:

1) some kind of custom map is used, on which the monument is located in an unusual way, not like on the procedural map, then I need this map (unlikely)

2) the data files have been edited several times since the release of the plugin, you may be using one of the older versions (maybe)

3) perhaps it gives out some kind of metro module or underwater laboratories, which I did not have on the map during testing, then I need the size and seed of the map (highly likely)

I'll try to keep the server running for another day with the map provided by Luuxen

proceduralmap
size: 4800
seed: 622707043

better yet, create a ticket in Discord Mad Mappers to figure out and solve this problem quickly, rather than taking a long time through the site. Otherwise, we will exchange messages with you once a day, and not through live communication in real time via Discord

I have now prepared a video where I load the default configurations for both the BetterNpc plugin and the BossMonster plugin. In the BossMonster plugin, I made all bosses spawn, not just 5, and in BetterNpc I disabled the sleep mode so that all npcs move at the same time to try to cause the problem as much as possible.
But as you can see, not in the console, not in the server logs file, I have no messages about such an error.
 

4) I've come up with another reason why you can get it, you may have files from other custom maps that will work on any map, but you currently have another map running