i can't add more mods in my aternos server

The Aternos forums are now deprecated

Learn more about this change here.

For help regarding Aternos, we recommend you to visit our support center.

    okay so my aternos server has multiple mods in it, and whenever i play and i wanna add a new mod into it, i add it, it says its added, and when i try to join my server says that i cannot join, help please

    What's the error you get while joining the server?

    i dont really remember but i know its something about a save like in the logs of the server it says : Mod unable to launch, current version has not been saved with mod: [Name of mod]

    Please share your server log

    The error says : Failed to synchronize registry data from server, closing connections

    Logs :

    [24Dec2021 13:21:19.184] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.2.20, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]
    2[24Dec2021 13:21:19.187] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 1.8.0_312 by Oracle Corporation
    3[24Dec2021 13:21:19.451] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
    4[24Dec2021 13:21:19.506] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/server/libraries/org/spongepowered/mixin/0.8.4/mixin-0.8.4.jar Service=ModLauncher Env=SERVER
    5[24Dec2021 13:21:21.108] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlserver' with arguments [--gameDir, ., nogui]
    6[24Dec2021 13:21:30.297] [modloading-worker-1/ERROR] [net.minecraftcapes.MinecraftCapes/]: MinecraftCapes has been loaded on server side. MinecraftCapes is a client only mod. No need to worry about this. You can delete the mod if you wish!
    7[24Dec2021 13:21:30.851] [modloading-worker-3/INFO] [net.minecraftforge.common.ForgeMod/FORGEMOD]: Forge mod loading, version 36.2.20, for MC 1.16.5 with MCP 20210115.111550
    8[24Dec2021 13:21:30.851] [modloading-worker-3/INFO] [net.minecraftforge.common.MinecraftForge/FORGE]: MinecraftForge v36.2.20 Initialized
    9[24Dec2021 13:21:36.060] [main/INFO] [blockarmor/]: Generated 1264 Block Armor items from Vanilla Blocks
    10[24Dec2021 13:21:36.060] [main/INFO] [blockarmor/]: Generated 616 Block Armor items from Modded Blocks
    11[24Dec2021 13:21:36.485] [main/WARN] [net.minecraftforge.common.ForgeHooks/]: Called deprecated GlobalEntityTypeAttributes#put for securitycraft:sentry, use EntityAttributeCreationEvent instead.
    12[24Dec2021 13:21:36.830] [modloading-worker-0/INFO] [com.sk89q.worldedit.forge.ForgeWorldEdit/]: WorldEdit for Forge (version 7.2.5+57d5ac9) is loaded
    13[24Dec2021 13:21:36.845] [modloading-worker-1/INFO] [tv.mapper.mapperbase.MapperBase/]: Mapper Base setup started!
    14[24Dec2021 13:21:36.886] [modloading-worker-3/INFO] [tv.mapper.roadstuff.RoadStuff/]: RoadStuff setup started!
    15[24Dec2021 13:21:36.901] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [obfuscate] Starting version check at https://raw.githubusercontent.…uscate/master/update.json
    16[24Dec2021 13:21:37.044] [main/WARN] [net.minecraftforge.common.ForgeHooks/]: Called deprecated GlobalEntityTypeAttributes#put for environmental:slabfish, use EntityAttributeCreationEvent instead.
    17[24Dec2021 13:21:37.044] [main/WARN] [net.minecraftforge.common.ForgeHooks/]: Called deprecated GlobalEntityTypeAttributes#put for environmental:deer, use EntityAttributeCreationEvent instead.
    18[24Dec2021 13:21:37.045] [main/WARN] [net.minecraftforge.common.ForgeHooks/]: Called deprecated GlobalEntityTypeAttributes#put for environmental:duck, use EntityAttributeCreationEvent instead.
    19[24Dec2021 13:21:37.045] [main/WARN] [net.minecraftforge.common.ForgeHooks/]: Called deprecated GlobalEntityTypeAttributes#put for environmental:yak, use EntityAttributeCreationEvent instead.
    20[24Dec2021 13:21:37.045] [main/WARN] [net.minecraftforge.common.ForgeHooks/]: Called deprecated GlobalEntityTypeAttributes#put for environmental:koi, use EntityAttributeCreationEvent instead.
    21[24Dec2021 13:21:38.513] [main/WARN] [net.minecraftforge.fml.DeferredWorkQueue/LOADING]: Mod 'environmental' took 1.499 s to run a deferred task.
    22[24Dec2021 13:21:38.580] [modloading-worker-1/INFO] [xaero.common.server.XaeroMinimapServer/]: Loading Xaero's Minimap - Stage 1/2 (Server)
    23[24Dec2021 13:21:38.585] [main/INFO] [xaero.common.server.XaeroMinimapServer/]: Loading Xaero's Minimap - Stage 2/2 (Server)
    24[24Dec2021 13:21:38.813] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [obfuscate] Found status: BETA Current: 0.6.0 Target: null
    25[24Dec2021 13:21:38.814] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [cgm] Starting version check at https://raw.githubusercontent.…es/master/cgm/update.json
    26[24Dec2021 13:21:38.843] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [cgm] Found status: BETA Current: 1.0.1 Target: null
    27[24Dec2021 13:21:38.845] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [vehicle] Starting version check at https://raw.githubusercontent.…aster/vehicle/update.json
    28[24Dec2021 13:21:38.856] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [vehicle] Found status: BETA Current: 0.45.2 Target: null
    29[24Dec2021 13:21:38.856] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [forge] Starting version check at https://files.minecraftforge.n…orge/promotions_slim.json
    30[24Dec2021 13:21:39.279] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [forge] Found status: UP_TO_DATE Current: 36.2.20 Target: null
    31[24Dec2021 13:21:39.279] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [supertools] Starting version check at https://raw.githubusercontent.…Tools/updates/update.json
    32[24Dec2021 13:21:39.428] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [supertools] Found status: UP_TO_DATE Current: 1.2 Target: null
    33[24Dec2021 13:21:39.429] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [securitycraft] Starting version check at https://www.github.com/Geforce…master/Updates/Forge.json
    34[24Dec2021 13:21:39.634] [Forge Version Check/INFO] [net.minecraftforge.fml.VersionChecker/]: [securitycraft] Found status: OUTDATED Current: v1.8.21.1 Target: v1.9.0.2
    35[24Dec2021 13:21:46.456] [main/INFO] [com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService/]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
    36[24Dec2021 13:21:47.095] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
    37[24Dec2021 13:21:47.096] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
    38[24Dec2021 13:21:47.097] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
    39[24Dec2021 13:21:47.097] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
    40[24Dec2021 13:21:47.098] [main/WARN] [net.minecraft.command.Commands/]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
    41[24Dec2021 13:21:47.129] [main/INFO] [net.minecraft.resources.SimpleReloadableResourceManager/]: Reloading ResourceManager: Default, forge-1.16.5-36.2.20-universal.jar, [1.16.5] SecurityCraft v1.8.21.1.jar, obfuscate-0.6.0-1.16.3.jar, vehicle-mod-0.45.2-1.16.3.jar, cgm-1.0.1-1.16.3.jar, projectvibrantjourneys-1.16.5-3.0.0.jar, jei-1.16.5-7.6.4.86.jar, abnormals_core-1.16.5-3.1.1.jar, environmental-1.16.5-1.0.0.jar, personality-1.16.5-1.0.2.jar, Xaeros_Minimap_21.10.0.3_Forge_1.16.5.jar, MinecraftCapes Forge 1.16.5-v10.jar, mapperbase-1.16.4-2.3.0.0.jar, BlockArmor-1.16.5-2.6.jar, SuperTools-1.2_1.16.5.jar, roadstuff-1.16.4-4.2.0.jar, UselessSword-1.16.5-V1.2.9.jar, smartphone-1.16.4-1.2.0.jar, chiselsandbits-0.3.4-RELEASE.jar, bukkit, secretrooms-1.16.5-1.0.1.jar, ironchest-1.16.4-11.2.10.jar, worldedit-mod-7.2.5-dist.jar, SCPOvertime-1.16.5-1.3.5.jar
    42[24Dec2021 13:21:50.200] [Worker-Main-3/INFO] [net.minecraft.item.crafting.RecipeManager/]: Skipping loading recipe ironchest:chests/iron_silver_chest as it's serializer returned null
    43[24Dec2021 13:21:50.219] [Worker-Main-3/INFO] [net.minecraft.item.crafting.RecipeManager/]: Skipping loading recipe ironchest:upgrades/copper_to_iron_chest_upgrade as it's serializer returned null
    44[24Dec2021 13:21:50.225] [Worker-Main-3/INFO] [net.minecraft.item.crafting.RecipeManager/]: Skipping loading recipe ironchest:chests/silver_diamond_chest as it's serializer returned null

    Share your log properly:

    1.) Go to your log on Aternos: https://aternos.org/log/

    2.) Click on the big blue "Share" button on the top right

    3.) Copy the link with (Ctrl + C or click on the "Copy" button)

    4.) Send the link here.