Firedancer port 8899 not work

[fopcontrol]

Hi, i cant start validator, becouse i have problems with connection to RPC with port 8899. Can't understand what need to fix ? ERR 03-10 18:25:37.069668 78256 f0 agave validator/src/bootstrap.rs(503): Failed to get RPC nodes: Unable to find any RPC peers. Consider checking system clock, removing --no-port-check, or adjusting --known-validator ... arguments as applicable
ERR 03-10 18:25:37.077515 78243 f0 pidns src/app/fdctl/run/run.c(413): tile agave:0 exited with code 1
I not use --no-port-check, or adjusting `--known-validator!!!

config file:
`user = "firedancer"

[gossip]
entrypoints = [
"entrypoint.testnet.solana.com:8001",
"entrypoint2.testnet.solana.com:8001",
"entrypoint3.testnet.solana.com:8001",
]

[consensus]
identity_path = "/home/firedancer/validator-keypair.json"
vote_account_path = "/home/firedancer/vote-keypair.json"

known_validators = [
    "5D1fNXzvv5NjV1ysLjirC4WY92RNsVH18vjmcszZd8on",
    "dDzy5SR3AXdYWVqbDEkVFdvSPCtS9ihF5kJkHCtXoFs",
    "Ft5fbkqNa76vnsjYNwjDZUXoTWpP7VYm3mtsaQckQADN",
    "eoKpUABi59aT4rR9HGS3LcMecfut9x7zJyodWWP43YQ",
    "9QxCLckBiJc783jnMvXZubK4wH86Eqqvashtrwvcsgkv",
]

[tiles.gui]
enabled = true
gui_listen_address = "192.168.88.100"
gui_listen_port = 80

[rpc]
port = 8899
full_api = true
private = true

[reporting]
solana_metrics_config = "host=https://metrics.solana.com:8086,db=tds,u=testnet_write,p=c4fa841aa918bf8274e3e2a44d77568d9861b3ea"
`

[ripatel-fd]

Hello @fopcontrol, this error means that your validator failed to connect to any of the nodes in the known_validators block. Consider adding another node.