Changed Arclight version and my server crashed

I have been playing on a server with friends with arclight version 1.19.2 but recently, Aternos had a message saying that they wouldn't support that version anymore so I tought of updating it to the only available option that was 1.19.3.

I tried to start the server after that and it crashed and I really don't know what to do, I also have plugins and a lot of 1.19.2 mods so. Me and my friends have several hours put into this world and I really don't want to lose the world and all the progress we've done, so please if anybody knows what to do or how to solve it, i'd appreciate it a lot.

I leave the log: https://mclo.gs/Mw7fAyp

Console output:

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[17May2023 01:16:27.052] [main/INFO] [Arclight/]:
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___ ___ __ /\

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/ | ________/ (_)__ / / / /

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/ /| |/ __/ __/ / / _ / _ \/__/

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/ ___ / / / /_/ / / / / // / /

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/_/ |/_/ \__/_/_/\_ /_//_/ /

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/__/ \/

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Version (Great Horn) / arclight-1.19.3-1.0.2-98f5a183

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Build Date 2023-02-02 09:05:24

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[17May2023 01:16:27.145] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.forgeVersion, 44.1.8, --fml.mcVersion, 1.19.3, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20221207.122022, nogui]

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[17May2023 01:16:27.146] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 10.0.8+10.0.8+main.0ef7e830 starting: java version 17.0.4.1 by Eclipse Adoptium; OS Linux arch amd64 version 5.4.0-146-generic

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[17May2023 01:16:28.027] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/server/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%2397!/ Service=ModLauncher Env=SERVER

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[17May2023 01:16:28.648] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /server/libraries/net/minecraftforge/fmlcore/1.19.3-44.1.8/fmlcore-1.19.3-44.1.8.jar is missing mods.toml file

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[17May2023 01:16:28.649] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /server/libraries/net/minecraftforge/javafmllanguage/1.19.3-44.1.8/javafmllanguage-1.19.3-44.1.8.jar is missing mods.toml file

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[17May2023 01:16:28.649] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /server/libraries/net/minecraftforge/lowcodelanguage/1.19.3-44.1.8/lowcodelanguage-1.19.3-44.1.8.jar is missing mods.toml file

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[17May2023 01:16:28.650] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /server/libraries/net/minecraftforge/mclanguage/1.19.3-44.1.8/mclanguage-1.19.3-44.1.8.jar is missing mods.toml file

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[17May2023 01:16:28.788] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.JarInJarDependencyLocator/]: Found 5 dependencies adding them to mods collection

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[17May2023 01:16:28.929] [main/ERROR] [net.minecraftforge.fml.loading.ModSorter/LOADING]: Missing or unsupported mandatory dependencies:

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Mod ID: 'minecraft', Requested by: 'kotlinforforge', Expected range: '[1.18,1.19.3)', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'oaks_decor', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'jei', Expected range: '[1.19,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'reap', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'skinnedlanterns', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'camera', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'undead_unleashed', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'uteamcore', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'additionallanterns', Expected range: '[1.19,1.19.3)', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'supermartijn642corelib', Expected range: '[1.19,1.19.3)', Actual version: '1.19.3'

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Mod ID: 'minecraft', Requested by: 'gravestone', Expected range: '[1.19.2,1.19.2]', Actual version: '1.19.3'

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[17May2023 01:16:31.935] [main/INFO] [mixin/]: Compatibility level set to JAVA_17

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[17May2023 01:16:32.242] [main/INFO] [mixin/]: Successfully loaded Mixin Connector [shetiphian.core.mixins.MixinConnector]

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[17May2023 01:16:32.243] [main/INFO] [mixin/]: Successfully loaded Mixin Connector [de.maxhenkel.camera.MixinConnector]

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[17May2023 01:16:32.244] [main/INFO] [mixin/]: Successfully loaded Mixin Connector [shetiphian.multibeds.mixins.MixinConnector]

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[17May2023 01:16:32.246] [main/INFO] [mixin/]: Successfully loaded Mixin Connector [io.izzel.arclight.common.mod.ArclightConnector]

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[17May2023 01:16:32.267] [main/INFO] [Arclight/]: Arclight core mixin added.

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[17May2023 01:16:32.268] [main/INFO] [Arclight/]: Arclight optimization mixin added.

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[17May2023 01:16:32.271] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'forgeserver' with arguments [nogui]

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[17May2023 01:16:32.315] [main/WARN] [mixin/]: Reference map 'naturalist-forge-forge-refmap.json' for naturalist.mixins.json could not be read. If this is a development environment you can ignore this message

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[17May2023 01:16:32.357] [main/WARN] [mixin/]: Reference map '${refmap_target}refmap.json' for corgilib.forge.mixins.json could not be read. If this is a development environment you can ignore this message

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[17May2023 01:16:32.374] [main/WARN] [mixin/]: Reference map 'mvs.refmap.json' for mvs.mixins.json could not be read. If this is a development environment you can ignore this message

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[17May2023 01:16:32.982] [main/WARN] [mixin/]: Error loading class: net/minecraft/data/loot/BlockLoot (java.lang.ClassNotFoundException: net.minecraft.data.loot.BlockLoot)

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[17May2023 01:16:32.982] [main/WARN] [mixin/]: @Mixin target net.minecraft.data.loot.BlockLoot was not found moonlight-common.mixins.json:accessor.BlockLootAccessor

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[17May2023 01:16:33.133] [main/WARN] [mixin/]: Error loading class: net/minecraft/data/BuiltinRegistries (java.lang.ClassNotFoundException: net.minecraft.data.BuiltinRegistries)

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[17May2023 01:16:33.133] [main/WARN] [mixin/]: @Mixin target net.minecraft.data.BuiltinRegistries was not found enhancedcelestials.mixins.json:access.BuiltinRegistriesAccess

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[17May2023 01:16:34.008] [main/WARN] [mixin/]: Error loading class: net/minecraft/commands/arguments/ResourceOrTagLocationArgument$Result (java.lang.ClassNotFoundException: net.minecraft.commands.arguments.ResourceOrTagLocationArgument$Result)

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[17May2023 01:16:34.029] [main/WARN] [mixin/]: Error loading class: net/minecraft/commands/arguments/ResourceOrTagLocationArgument$Result (java.lang.ClassNotFoundException: net.minecraft.commands.arguments.ResourceOrTagLocationArgument$Result)

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[17May2023 01:16:34.033] [main/WARN] [mixin/]: Error loading class: net/minecraft/world/level/gameevent/vibrations/VibrationListener$ReceivingEvent (java.lang.ClassNotFoundException: net.minecraft.world.level.gameevent.vibrations.VibrationListener$ReceivingEvent)

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[17May2023 01:16:34.041] [main/WARN] [mixin/]: Error loading class: net/minecraft/commands/arguments/ResourceOrTagLocationArgument$Result (java.lang.ClassNotFoundException: net.minecraft.commands.arguments.ResourceOrTagLocationArgument$Result)

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[17May2023 01:16:34.108] [main/WARN] [mixin/]: Error loading class: net/minecraft/commands/arguments/ResourceOrTagLocationArgument$Result (java.lang.ClassNotFoundException: net.minecraft.commands.arguments.ResourceOrTagLocationArgument$Result)

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[17May2023 01:16:34.118] [main/WARN] [mixin/]: Error loading class: net/minecraft/core/Registry$RegistryBootstrap (java.lang.ClassNotFoundException: net.minecraft.core.Registry$RegistryBootstrap)

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[17May2023 01:16:34.124] [main/WARN] [mixin/]: Error loading class: net/minecraft/commands/arguments/ResourceOrTagLocationArgument$Result (java.lang.ClassNotFoundException: net.minecraft.commands.arguments.ResourceOrTagLocationArgument$Result)

I'll try install the 1.19.3 version of the mods but I think there are 2 mods that aren't available to that version.

This is the log from the console:

Quote from Powerful845tiger

Did you install the 1.19.3 version of all the mods?

Can you keep the console open while the server is crashing and copy the lines from it to https://mclo.gs, then share the log

Well, I updated the mods to the 1.19.3 version but there are 3 mods that aren't updated to the 1.19.3 being:

Undead Unleashed

Oak's Decor

UTeamCore (even tough I'm using the 1.19.3 version it still sends an error)

I know that deleting these mods would solve the problem, but we have spent so much time using these mods, specially Undead Unleashed and I would like to know if there is another solution so we don't lose all the progress.

Thank you for responding.

This is the new Console log i got after updating the mods:

I uninstalled the "t_and_t" mod, deleted the other mods that were not available for 1.19.3 but it still crashes and I don't know what to do anymore, I tried everything that I could think of but I just don't have any idea.

This is the new log that appears when crashing:

Now this happens: https://mclo.gs/hyjsxU0

All of this happened because I updated Arclight to the 1.19.3 because Aternos said they were not going to support the 1.19.2 anymore.

Can't they just bring back arclight 1.19.2? Or is there another way of using that version in Aternos?

Please