Base informations

Minecraft version:
1.7.10

DiscordIntegration version:
3.0.1

Traceback

java.lang.NoClassDefFoundError: com/mojang/realmsclient/gui/ChatFormatting
	at chikachi.discord.DiscordIntegration$2.replace(DiscordIntegration.java:119)
	at chikachi.discord.core.Patterns.executeReplacement(Patterns.java:81)
	at chikachi.discord.core.Patterns.minecraftToDiscord(Patterns.java:62)
	at chikachi.discord.core.Message.formatText(Message.java:201)
	at chikachi.discord.core.Message.formatText(Message.java:122)
	at chikachi.discord.core.Message.toWebhook(Message.java:77)
	at chikachi.discord.core.DiscordClient.broadcast(DiscordClient.java:211)

Traceback suggests this is related to color codes. ChatFormatting is a client-side class and not available on servers. This issue suggests replacing it with net.minecraft.util.text.TextFormatting.

I am having a similar issue on 1.8.9.

java.lang.NoClassDefFoundError: com/mojang/realmsclient/gui/ChatFormatting
at chikachi.discord.DiscordIntegration$1.post(DiscordIntegration.java:99)
at chikachi.discord.core.Patterns.executeReplacement(Patterns.java:85)
at chikachi.discord.core.Patterns.discordToMinecraft(Patterns.java:50)
at chikachi.discord.core.Message.formatText(Message.java:205)
at chikachi.discord.core.Message.getFormattedTextMinecraft(Message.java:226)
at chikachi.discord.listener.DiscordListener.onMessageReceived(DiscordListener.java:135)
at chikachi.discord.repack.net.dv8tion.jda.core.hooks.ListenerAdapter.onEvent(ListenerAdapter.java:385)
at chikachi.discord.repack.net.dv8tion.jda.core.hooks.InterfacedEventManager.handle(InterfacedEventManager.java:84)
at chikachi.discord.repack.net.dv8tion.jda.core.handle.MessageCreateHandler.handleDefaultMessage(MessageCreateHandler.java:128)
at chikachi.discord.repack.net.dv8tion.jda.core.handle.MessageCreateHandler.handleInternally(MessageCreateHandler.java:49)
at chikachi.discord.repack.net.dv8tion.jda.core.handle.SocketHandler.handle(SocketHandler.java:37)
at chikachi.discord.repack.net.dv8tion.jda.core.requests.WebSocketClient.handleEvent(WebSocketClient.java:768)
at chikachi.discord.repack.net.dv8tion.jda.core.requests.WebSocketClient.onTextMessage(WebSocketClient.java:498)
at chikachi.discord.repack.com.neovisionaries.ws.client.ListenerManager.callOnTextMessage(ListenerManager.java:352)
at chikachi.discord.repack.com.neovisionaries.ws.client.ReadingThread.callOnTextMessage(ReadingThread.java:260)
at chikachi.discord.repack.com.neovisionaries.ws.client.ReadingThread.callOnTextMessage(ReadingThread.java:238)
at chikachi.discord.repack.com.neovisionaries.ws.client.ReadingThread.handleTextFrame(ReadingThread.java:963)
at chikachi.discord.repack.com.neovisionaries.ws.client.ReadingThread.handleFrame(ReadingThread.java:746)
at chikachi.discord.repack.com.neovisionaries.ws.client.ReadingThread.main(ReadingThread.java:108)
at chikachi.discord.repack.com.neovisionaries.ws.client.ReadingThread.runMain(ReadingThread.java:64)
at chikachi.discord.repack.com.neovisionaries.ws.client.WebSocketThread.run(WebSocketThread.java:45)