error in implementation railway

[PeraltaEspectre]

I put the ffmpeg in the requirements but still giving this error

2022-10-25 22:33:08 - WARNING - Addon must_join is loaded but no chat is listed in MUST_JOIN var of settings
2022-10-25 22:33:25 - WARNING - Addon must_join is loaded but no chat is listed in MUST_JOIN var of settings
invalid literal for int() with base 10: '/bin/sh: 1: ffprobe: not found\n'
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.10/site-packages/pyrogram/dispatcher.py", line 222, in handler_worker
await handler.callback(self.client, *args)
File "/app/.heroku/python/lib/python3.10/site-packages/pyromod/listen/listen.py", line 93, in resolve_listener
await self.user_callback(client, message, *args)
File "/workspace/plugins/main.py", line 12, in main
await process(msg, stark, status)
File "/workspace/plugins/main.py", line 21, in process
std = await stark.subshell()
File "/workspace/plugins/helpers.py", line 60, in subshell
cmd = await self.get_ffmpeg_cmd()
File "/workspace/plugins/helpers.py", line 69, in get_ffmpeg_cmd
dim = await self.get_dimensions()
File "/workspace/plugins/helpers.py", line 78, in get_dimensions
dim = [int(x) for x in dim]
File "/workspace/plugins/helpers.py", line 78, in
dim = [int(x) for x in dim]
ValueError: invalid literal for int() with base 10: '/bin/sh: 1: ffprobe: not found\n'