Improve error messages in error channel, improve error message for ka…

…rma donate

core/bot.py

@@ -86,7 +86,11 @@ async def on_command_error(self, ctx: commands.Context, error) -> None:
 			await ctx.send("A required argument is missing.")
 
 		ERRORS_CHANNEL_ID = 1219407043186659479
-		embed = discord.Embed(title="Error", description=f"```{error}```", color=discord.Color.red())
+		if ctx.guild:
+			error_msg = f"Error in {ctx.guild.name} ({ctx.guild.id}) by {ctx.author} -> {ctx.command.qualified_name}"
+		else:
+			error_msg = f"Error in DMs by {ctx.author} -> {ctx.command.qualified_name}"
+		embed = discord.Embed(title=error_msg, description=f"```{error}```", color=discord.Color.red())
 		await self.get_channel(ERRORS_CHANNEL_ID).send(embed=embed)
 
 		try:

extensions/karma.py

@@ -1,5 +1,6 @@
 import logging
 import os
+import io
 import re
 from datetime import datetime
 
@@ -165,7 +166,7 @@ async def karma_donate(self, ctx: commands.Context, *args):
 		"""
 		if len(args) != 2:
 			msg = f"Got {len(args)} arguments, expected 2."
-			raise commands.MissingRequiredArgument(msg)
+			raise NotEnoughArguments(msg)
 
 		user = None
 		amount = None
@@ -238,8 +239,9 @@ def pred(m: discord.Member) -> bool:
 	@karma_donate.error
 	async def karma_donate_error(self, ctx: commands.Context, error):
 		embed = discord.Embed(color=0xF66045)
-		if isinstance(error, commands.MissingRequiredArgument):
-			embed.description = "You didn't specify a user to donate to!"
+		print(type(error))
+		if isinstance(error, NotEnoughArguments):
+			embed.description = "You didn't specify a `amount` or `user` to donate to!"
 		elif isinstance(error, commands.BadArgument):
 			embed.description = f"Wrong command usage! Command usage is `{ctx.prefix}karma donate <user> <amount>`"
 		else:
@@ -460,10 +462,10 @@ async def karma_stats_graph(self, ctx: commands.Context):
 			fig = go.Figure(data=go.Bar(x=x, y=y))
 			fig.update_layout(title="Karma Graph", xaxis_title="Percentile of users", yaxis_title="Total karma")
 			fig.update_layout(template="plotly_dark")
-			fig.write_image(filename)
+			image_bytes = fig.to_image(format="png")
+			image_file = io.BytesIO(image_bytes)
 
-			await ctx.send(file=discord.File(filename))
-			os.remove(filename)
+			await ctx.send(file=discord.File(image_file, filename=f"{filename}.png"))
 
 	@commands.hybrid_group(name="post", aliases=["po"], invoke_without_command=True)
 	async def post(self, ctx: commands.Context):
@@ -1098,6 +1100,10 @@ async def on_submit(self, interaction: discord.Interaction) -> None:
 		await _update_kasino_msg(bot, kasino_id)
 
 
+class NotEnoughArguments(commands.UserInputError):
+	pass
+
+
 async def setup(bot: core.Substiify):
 	query = await bot.db.fetch("SELECT * FROM discord_channel WHERE upvote = True")
 	upvote_channels = [channel["discord_channel_id"] for channel in query] or []