FFmpegPCMaudio doesn't work on my server but it works on my computer

Question

I am developing a Discord bot with python that can play music. When I do the tests on my computer all work find but when I take all the files to put there in my server it stop working. So I tried to run it on an other computer and no, it still does not work.

First I was thinking it was a power problems but the other computer is almost the same. I tried to install all the packages that I have on my computer to the second but the music part still not work. It's not a Discord API problem because my others commands work find.

import discord
from discord.ext import commands
from youtube_dl import YoutubeDL


class music_cog(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

        # all the music related stuff
        self.is_playing = False

        # 2d array containing [song, channel]
        self.music_queue = []
        self.YDL_OPTIONS = {'format': 'bestaudio', 'noplaylist': 'True'}
        self.FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5',
                               'options': '-vn'}

        self.vc = ""

    # searching the item on youtube
    def search_yt(self, item):
        with YoutubeDL(self.YDL_OPTIONS) as ydl:
            try:
                info = ydl.extract_info("ytsearch:%s" % item, download=False)['entries'][0]
            except Exception:
                return False

        return {'source': info['formats'][0]['url'], 'title': info['title']}

    def play_next(self):
        if len(self.music_queue) > 0:
            self.is_playing = True

            # get the first url
            m_url = self.music_queue[0][0]['source']

            # remove the first element as you are currently playing it
            self.music_queue.pop(0)

            self.vc.play(discord.FFmpegPCMAudio(m_url, **self.FFMPEG_OPTIONS), after=lambda e: self.play_next())
        else:
            self.is_playing = False

    # infinite loop checking
    async def play_music(self):
        if len(self.music_queue) > 0:
            self.is_playing = True

            m_url = self.music_queue[0][0]['source']

            # try to connect to voice channel if you are not already connected

            if self.vc == "" or not self.vc.is_connected() or self.vc == None:
                self.vc = await self.music_queue[0][1].connect()
            else:
                await self.vc.move_to(self.music_queue[0][1])

            print(self.music_queue)
            # remove the first element as you are currently playing it
            self.music_queue.pop(0)

            self.vc.play(discord.FFmpegPCMAudio(m_url, **self.FFMPEG_OPTIONS), after=lambda e: self.play_next())
        else:
            self.is_playing = False

    @commands.command(name="play", help="Plays a selected song from youtube")
    async def p(self, ctx, *args):
        query = " ".join(args)

        voice_channel = discord.utils.get(ctx.guild.voice_channels, name='General')
        if voice_channel is None:
            # you need to be connected so that the bot knows where to go
            await ctx.send("Connect to a voice channel!")
        else:
            song = self.search_yt(query)
            if type(song) == type(True):
                await ctx.send(
                    "Could not download the song. Incorrect format try another keyword. This could be due to playlist or a livestream format.")
            else:
                await ctx.send("Song added to the queue")
                self.music_queue.append([song, voice_channel])

                if self.is_playing == False:
                    await self.play_music()

    @commands.command(name="queue", help="Displays the current songs in queue")
    async def q(self, ctx):
        retval = ""
        for i in range(0, len(self.music_queue)):
            retval += self.music_queue[i][0]['title'] + "\n"

        print(retval)
        if retval != "":
            await ctx.send(retval)
        else:
            await ctx.send("No music in queue")

    @commands.command(name="skip", help="Skips the current song being played")
    async def skip(self, ctx):
        if self.vc != "" and self.vc:
            self.vc.stop()
            # try to play next in the queue if it exists
            await self.play_music()

    @commands.command(name="disconnect", help="Disconnecting bot from VC")
    async def dc(self, ctx):
        await self.vc.disconnect()

    @commands.command(name="pause")
    async def pause(self, ctx):
        voice = discord.utils.get(self.bot.voice_clients, guild=ctx.guild)
        if voice.is_playing():
            voice.pause()
        else:
            await ctx.send("Currently no audio is playing.")

    @commands.command(name="resume")
    async def resume(self, ctx):
        voice = discord.utils.get(self.bot.voice_clients, guild=ctx.guild)
        if voice.is_paused():
            voice.resume()
        else:
            await ctx.send("The audio is not paused.")

There are not any error messages, the bot just joins the voice chat and does nothing.

If someone can tell me we it work just on my computer I will be very grateful.

My files:

Answer 1

I finally found the problem, in environment variable I set ffmpeg in general not in path. When I put ffmpeg in cmd It did nothing so I reinstalled ffmpeg in the good place and it is done all work, thk for all your help