No peers for optimistic sync in electra

[LeanSerra]

When trying to sync the client to any of the testnets "sepolia", "holesky" or "hoodi" in the branch electra-support the client does not connect to peers even after waiting for a long time.
The client returns:

ERROR 11:10:33.068 GenServer LambdaEthereumConsensus.Libp2pPort terminating
** (RuntimeError) No peers available to request blocks from.
    (lambda_ethereum_consensus 0.1.0) lib/lambda_ethereum_consensus/p2p/block_downloader.ex:190: LambdaEthereumConsensus.P2P.BlockDownloader.get_some_peer/0
    (lambda_ethereum_consensus 0.1.0) lib/lambda_ethereum_consensus/p2p/block_downloader.ex:69: LambdaEthereumConsensus.P2P.BlockDownloader.request_blocks_by_range/4
    (lambda_ethereum_consensus 0.1.0) lib/lambda_ethereum_consensus/p2p/block_downloader.ex:110: anonymous fn/7 in LambdaEthereumConsensus.P2P.BlockDownloader.handle_blocks_by_range_response/7
    (lambda_ethereum_consensus 0.1.0) lib/lambda_ethereum_consensus/metrics.ex:115: anonymous fn/3 in LambdaEthereumConsensus.Metrics.handler_span/3
    (telemetry 1.3.0) lambda_ethereum_consensus/deps/telemetry/src/telemetry.erl:324: :telemetry.span/3
    (lambda_ethereum_consensus 0.1.0) lib/libp2p_port.ex:907: LambdaEthereumConsensus.Libp2pPort.handle_response/3
    (lambda_ethereum_consensus 0.1.0) lib/libp2p_port.ex:682: LambdaEthereumConsensus.Libp2pPort.handle_notification/2
    (lambda_ethereum_consensus 0.1.0) lib/libp2p_port.ex:551: LambdaEthereumConsensus.Libp2pPort.handle_info/2
Last message: {#Port<0.28>, {:data, <<50, 191, 1, 10, 36, 51, 100, 54, 101, 56, 57, 53, 100, 45, 100, 100, 101, 100, 45, 52, 48, 102, 102, 45, 56, 97, 56, 52, 45, 54, 56, 48, 53, 57, 55, 53, 101, 57, 100, 57, 101, 26, 150, 1, 102, 97, ...>>}}