TileEntity

Which mod was it?

Does the reforged build work? https://www.curseforge.com/minecraft/mc-mods/copious-dogs-reforged/files/5978379

Yes, but this modpack is adding fabric mods via Sinytra Connector

Does it work without the fabric mods?

Looks like an issue with fabric-api or a fabric mod Try other builds of fabric-api

Try an older build of fabric-api: https://www.curseforge.com/minecraft/mc-mods/fabric-api/files/6321634

Add crash-reports with sites like https://mclo.gs/ Replace Patchouli with this build: https://www.curseforge.com/minecraft/mc-mods/patchouli/files/4966125

Is there a mod Fabric Resource Conditions API? If not, then it refers to fabric-api (try other builds) or a fabric mod - remove these one by one until you find the one causing this issue

Start with adding connector / connector-extras and fabric-api If this works, add the fabric mods one by one or in groups until you find the mod causing this issue

Make a test without fabric-api and all fabric mods

Add the full crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

copiousdogs is not working

Remove dawnera - this mod is not working on a server

Make a test without nochatreports

The server is offline, or it is not the correct modpack GET request failed. Response Code: 301 [00:55:43] [Render thread/ERROR]: Can't ping gombessa.exaroton.host:58506: Internal Exception: java.net.SocketException: Connection reset [00:56:20] [Netty Client IO #2/ERROR]: Channels [mocreaturesfixedreforged:mocreaturesfixedreforged,citadel:main_channel,ava:main,corgilib:network,swem:main,minecraft:treechop-channel,crittersandcompanions:main,the_masked:the_masked,spartanshields:network,untamedwilds:main,immersive_weathering:channel,doggytalents:channel,ironchest:network,spartanweaponry:network,geckolib:main,waystones:network,moonlight:channel,refurbished_furniture:play] rejected vanilla connections

Add the full latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

You will need fabric loader 0.14.25 or a fork of bclib https://github.com/quiqueck/BCLib/issues/136

There is an issue with yungscavebiomes and/or lrarmor

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

Make a test without Epic Fight & Iron's Spellbook

Maybe switch to a pre-configured modpack using tacz and addons Use it as working base and add some mods

I am not sure, but maybe a structure mod is causing issues Mods like betterfortresses and other better x mods rainbowreef is mentioned, too - make a test without this mod first

Try other builds of it or report it to the creators

Looks like an issue with biomeswevegone

In the server.properties, set max-tick-time to -1 if there are further issues, make a test without distanthorizons