https://github.com/bitcoin/bitcoin/blob/d72758c3f6c34cd835f5de3efc230964f3b1ea56/src/torcontrol.cpp#L539

If a user is running Tor proxy outside localhost (perhaps on other host inside LAN or in containerised environment) , the automatic creation of onion services ends up creating an onion service listening to hardcored 127.0.0.1 address on the Tor proxy's host instead of the private address of the bitcoind – effectively running an empty onion service listening the Tor proxy's localhost.
{
    if (!ECC_InitSanityCheck()) {
        return InitError(Untranslated("Elliptic curve cryptography sanity check failure. Aborting."));
    }
    if (!glibc_sanity_test() || !glibcxx_sanity_test())
        return false;
    if (!Random_SanityCheck()) {
        return InitError(Untranslated("OS cryptographic RNG sanity check failure. Aborting."));
    }
    return true;
}
static bool AppInitServers(const util::Ref& context, NodeContext& node)
{
    const ArgsManager& args = *Assert(node.args);
    RPCServer::OnStarted(&OnRPCStarted);
    RPCServer::OnStopped(&OnRPCStopped);
    if (!InitHTTPServer())
        return false;
    StartRPC();
    node.rpc_interruption_point = RpcInterruptionPoint;
    if (!StartHTTPRPC(context))
        return false;
    if (args.GetBoolArg("-rest", DEFAULT_REST_ENABLE)) StartREST(context);
    StartHTTPServer();
    return true;
}
void InitParameterInteraction(ArgsManager& args)