Command raised an exception: TypeError: Object of type File is not JSON serializable but no other solution working for me - discord

Question

The Function of discord command named server
#bot.command(name = 'server')
async def _minecraftserverinfo(ctx, ip:str, port:str, servername:str):
if servername == "survival":
svname = "Survival"
elif servername == "lobby":
svname = "Lobby"
#serverembed = createEmbed(ip, port)
#value = f"The server has {status.players.online} players and replied in {status.latency} ms\nThe server replied in {latency} ms\nThe server has the following players online: {','.join(query.players.names)}"
server = MinecraftServer.lookup(ip+':'+port)
#=======================================
#=======================================
# 'status' is supported by all Minecraft servers that are version 1.7 or higher.
status = server.status()
latency = server.ping()
query = server.query()
serverembed = discord.Embed(title = ip, url = "https://www.zer02infinity.com/",description = f"Zero To Infinity Minecraft {svname} Server")#\nThe server has the following players online: {','.join(query.players.names)}")
serverembed.set_thumbnail(url="https://cdn.discordapp.com/attachments/833829693588373534/920017091325747220/2021-12-13_11.png")
serverembed.add_field(name="Players Count", value=f"{status.players.online}/{query.players.max}", inline=True)
serverembed.add_field(name="Direct Connect:", value=f"```mc.zer02infinity.com```", inline=True)
#serverembed.add_field(name="Names:", value=f"{latency} ms", inline=True)
#nl = '\n'
#serverembed.add_field(name="Names:", value=f"{nl}{nl.join(query.players.names)}", inline=False)
#serverembed.add_field(name="Names:", value={'\n'.join(query.players.ping)}, inline=True)
#sending embed
embed = await ctx.send(embed=serverembed)
await embed.add_reaction(emoji)
message_id = embed.id
while True:
server = MinecraftServer.lookup(ip+':'+port)
# 'status' is supported by all Minecraft servers that are version 1.7 or higher.
status = server.status()
latency = server.ping()
query = server.query()
serverembed = discord.Embed(title = ip, url = "https://www.zer02infinity.com/",description = f"Zero To Infinity Minecraft {svname} Server")#\nThe server has the following players online: {','.join(query.players.names)}")
serverembed.set_thumbnail(url="https://cdn.discordapp.com/attachments/833829693588373534/920017091325747220/2021-12-13_11.png")
serverembed.add_field(name="Players Count", value=f"{status.players.online}/{query.players.max}", inline=True)
serverembed.add_field(name="Direct Connect:", value=f"```mc.zer02infinity.com```", inline=True)
#serverembed.add_field(name="Names:", value=f"{latency} ms", inline=True)
#nl = '\n'
problem started after i added a image from local file
file = discord.File("./foo.png", filename="foo.png")
serverembed.add_field(name="Names:", value={','.join(query.players.names)}, inline=False)
serverembed.set_image(url="attachment://foo.png")
#print('Winners are:', *names, sep='\n')
serverembed = await embed.edit(file=file, embed = serverembed)
await asyncio.sleep(60)
pass
So this is the recent code i added where foo.png is maintained by graph.py given below
import discord
from discord.ext import commands
import matplotlib.pyplot as plt
class Equations(commands.Cog):
def __init__(self, bot):
self.bot = bot
def plotlineareq(self, a, b, clr):
x = [0, 10]
y = [(a * i + b) for i in x]
plt.figure(figsize=(10, 10)) # #Size of Graph
plt.xlim(x) # #X Range [-6,6]
plt.ylim(x) # #Y Range [-6,6]
axis = plt.gca() # #Get Current Axis
plt.plot(axis.get_xlim(), [0, 0], 'k--') # #X Axis Plots Line Across
plt.plot([0, 0], axis.get_ylim(), 'k--') # #Y Axis Plots Line Across
plt.locator_params(axis="x", nbins=20)
plt.locator_params(axis="y", nbins=20)
plt.plot(x, y, label='linear', linestyle='solid', color=clr)
plt.ylabel('Players')
plt.xlabel('Time')
mm = str(a)
bb = str(b)
plt.title('Live Status')
#plt.grid()
plt.savefig("foo.png")
#commands.command()
async def linear(self, ctx, equation):
try:
equation = equation.replace(" ", "")
mx = equation.split("x")[0]
mx = equation.replace("x", "").replace("y=", "")
bx = equation.split("+")[1]
self.plotlineareq(mx, bx, 'b')
file = discord.File("foo.png", filename='foo.png')
embed = discord.Embed(color=0xff0000)
embed = embed.set_image(url="attachment://foo.png")
await ctx.send(file=file, embed=embed)
except Exception as e:
await ctx.send(f"An error occured: {e}")
def setup(bot):
bot.add_cog(Equations(bot))
After executing it gives the following error in error log-
Command raised an exception: TypeError: Object of type File is not JSON serializable