Incompatible FLM Modded server error.

How do I fix this?
No description
29 Replies
Tamz
Tamz3w ago
Have you tried to connect even though it says that
Tori
ToriOP3w ago
Yea, it just says failed to connect.
Tamz
Tamz3w ago
!logs
Carl-bot
Carl-bot3w ago
Please check your server log for errors from your plugins.
If you need further help understanding the errors, please send us the whole log file. Where can I find the server log? Logs are stored in <server_directory>/logs/. Search for a file explorer in your server's management interface and navigate to that directory. Once you've opened that up, search for the latest.log file. Some providers have a separate page for logs and may hide the "logs" folder. On Aternos: • Go to https://aternos.org/log/. On Minehut and server.pro: • Go to the "files" tab in the left menu. • Navigate to the root directory of your server. • From there navigate to /logs/latest.log. What should I do with the log? • First of all, read it! I mean, that's what you do all the time when you run a server, isn't it? Try to locate any errors that have anything to do with the issue you are facing. • If you got the latest.log file or created a .txt file with the necessary errors you can upload these directly to the channel, but we prefer if you upload them to https://mclo.gs/. • If you have trouble downloading the log file, copy/paste the text to a paste service (like mclogs). Copy the link that it gives you and send it to us. (Don't worry, McLogs hides your users' IPs.)
Admincraft Canned Responses
Tori
ToriOP3w ago
This one right?
Tamz
Tamz3w ago
yes upload to mclogs
Tori
ToriOP3w ago
Oki I uploaded it. What now? https://api.mclo.gs/1/raw/RhQzB95
Tamz
Tamz3w ago
this log doesnt show anything
Tori
ToriOP3w ago
Really? I posted the server log into it.
Tamz
Tamz3w ago
doesnt show anything important share a full latest.log and client logs
Tamz
Tamz3w ago
[08Feb2025 23:58:22.222] [Netty Server IO #3/ERROR] [net.minecraftforge.fml.network.NetworkRegistry/NETREGISTRY]: Channels [cc:main] rejected their client side version number
[08Feb2025 23:58:22.323] [Netty Server IO #3/ERROR] [net.minecraftforge.fml.network.FMLHandshakeHandler/FMLHANDSHAKE]: Terminating connection with client, mismatched mod list
[08Feb2025 23:58:22.222] [Netty Server IO #3/ERROR] [net.minecraftforge.fml.network.NetworkRegistry/NETREGISTRY]: Channels [cc:main] rejected their client side version number
[08Feb2025 23:58:22.323] [Netty Server IO #3/ERROR] [net.minecraftforge.fml.network.FMLHandshakeHandler/FMLHANDSHAKE]: Terminating connection with client, mismatched mod list
Tori
ToriOP3w ago
So, in short it is the mod themselves which are a problem?
Tamz
Tamz3w ago
basically if you shared ur client i can find out which ones exactly
Tori
ToriOP3w ago
I wanted to play Roguelike Adventures and Dungeons 2.
Tamz
Tamz3w ago
how did you install the server or your client
Tori
ToriOP3w ago
Their Serverpack.
Tamz
Tamz3w ago
and the client?
Tori
ToriOP3w ago
Prism Launcher. Curseforge modpack.
Tamz
Tamz3w ago
did you install the mods it said to download?
Tori
ToriOP3w ago
Ehmmm, I don't even know what I need to download. Sorry, this is the first time I setup a server.
Tamz
Tamz3w ago
Prism tells you what mods cannot be downloaded via 3rd party tools aka ITSELF so did you download them or not?
Tori
ToriOP3w ago
No.
Tamz
Tamz3w ago
you need to
Tori
ToriOP2w ago
So, I tried adding the mods to it, the whole server crashed. Someone and me are trying to fix it, now the whole server does not start at all.
Tori
ToriOP2w ago
These are the errors I get now. Well, I got in myself. However, my friend cant join. I portforwarded.
qvaras
qvaras2w ago
!cgnat
Carl-bot
Carl-bot2w ago
We may have bad news for you :C You may be under a CGNAT which is a method that ISP's use to conserve IPV4 IP's due to how limited they are now. What this means in plain terms is that your IP address is being shared with other people as your router goes to the ISP's router, by default this means port forwarding doesn't work. We need to check if you are under a CGNAT and we got 2 options. Option 1: commands Depending on your OS, run the following command: - Windows: iex (Invoke-RestMethod -Uri "https://raw.githubusercontent.com/DominicTWHV/Is-It-CGNAT/refs/heads/main/windows.ps1") - Linux: curl -s https://raw.githubusercontent.com/DominicTWHV/Is-It-CGNAT/refs/heads/main/linux.sh | bash -# You should never run such things without reviewing and understanding the code Option 2: manually Open your router's configuration interface. Somewhere, you'll see something like 'external' or 'public' IP. If your external IP is in one of the following ranges, you're basically screwed as long as port forwards go: - 10.0.0.0/8 - 172.16.0.0/20 - 192.168.0.0/16 - 100.64.0.0/10 - any IPv6 address/range - This shouldn't be a problem, but Minecraft's IPv6 support is still rather quirky. You're at your own, but we're happy if you share your experience. What do I do now? You should ask your ISP for a public and IPv4 address (but this may cost you money). NB: your internal IP should and most probably will be in one of the first three ranges, don't mix them up

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