ViaVersion incompatibility?

[xMrAfonso]

Describe the bug
When pinging and joining the server, I get this error.

Software brand
Using Paper 1.20.6-149

Plugins
ViaVersion 5.0.3 (tried using snapshots of 5.0.4 and 5.0.2 but none worked either) and my own Plugin that uses PacketEvents.

[AoElite]

@xMrAfonso Are you using ViaVersion on the proxy or the backend?

[xMrAfonso]

@xMrAfonso Are you using ViaVersion on the proxy or the backend?

I have no proxy, this is just a standalone server.

[xMrAfonso]

Any news on this?

[booky10]

works for me when using paper 1.20.6 build 149, packetevents 2bf64b6, viaversion 954 and viabackwards 494
is there any specific client version where this error occurs? do you have any other plugins installed?

[xMrAfonso]

works for me when using paper 1.20.6 build 149, packetevents 2bf64b6, viaversion 954 and viabackwards 494 is there any specific client version where this error occurs? do you have any other plugins installed?

I do not, could you maybe check out my code? It's a project called Runway in my github. PS: PacketEvents version is not updated there.

[booky10]

this problem is caused by how you depend on packetevents

packetevents determines presence of viaversion by looking up if the plugin is registered
as you use the library-loader of paper plugins, your plugin (and therefore also packetevents) can't access viaversion classes and fails

there are multiple different solutions to this problem, but this cant be solved by packetevents:

1. dont use paper plugins (or set has-open-classloader to true, I wouldnt recommend doing this)
2. dont shade packetevents and dont use the library-loader to load it, just depend on the plugin-version of it
3. add ViaVersion as a non-required dependency to your paper-plugin config, therefore allowing packetevents to access its classes

[xMrAfonso]

this problem is caused by how you depend on packetevents

packetevents determines presence of viaversion by looking up if the plugin is registered as you use the library-loader of paper plugins, your plugin (and therefore also packetevents) can't access viaversion classes and fails

there are multiple different solutions to this problem, but this cant be solved by packetevents:

1. dont use paper plugins (or set has-open-classloader to true, I wouldnt recommend doing this)
2. dont shade packetevents and dont use the library-loader to load it, just depend on the plugin-version of it
3. add ViaVersion as a non-required dependency to your paper-plugin config, therefore allowing packetevents to access its classes

Hey, I already added ViaVersion as a soft dependency... still the same issue:

ViaVersion:
  load: BEFORE
  required: false
  join-classpath: true

[booky10]

See conversations on discord for some context
https://canary.discord.com/channels/721686193061888071/721686193515003966/1285549837479317555
https://canary.discord.com/channels/721686193061888071/721686193515003966/1287053524110147706