Go Kubo，来自 IpfsNode.Bootstrap 的无效内存地址或零指针取消引用

我从IpfsNode.Bootstrap获得无效的内存地址或空指针取消引用 我假设Bootstrap Run中有一些panic ，但我在这里做错了什么吗？ 还是有什么问题呢？ 我使用的是Kubo v0.20.0 以下是我的代码:

package main

import (
    "context"
    "fmt"

    "github.com/ipfs/kubo/config"
    "github.com/ipfs/kubo/core"
    "github.com/ipfs/kubo/core/bootstrap"
)

func main() {
    ctx := context.Background()
    conf := core.BuildCfg{}
    node, err := core.NewNode(ctx, &conf)
    if err != nil {
        panic(err)
    }
    peers, err := config.DefaultBootstrapPeers()
    if err != nil {
        panic(err)
    }
    bs_conf := bootstrap.BootstrapConfigWithPeers(peers)
    err = node.Bootstrap(bs_conf) // this gets nil pointer dereference
    fmt.Println("THIS LINE WILL NOT PRINT")
    if err != nil {
        panic(err)
    }
}

完整的错误是:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0xee49eb]

goroutine 69 [running]:
github.com/ipfs/kubo/core/bootstrap.bootstrapRound({0x18bf1d8?, 0xc0000b05f0?}, {0x0, 0x0}, {0x0?, 0x0?, 0x0?, 0xc0006240c0?})
        /home/axel/go/pkg/mod/github.com/ipfs/kubo@v0.20.0/core/bootstrap/bootstrap.go:118 +0xab
github.com/ipfs/kubo/core/bootstrap.Bootstrap.func1({0x18cbd58?, 0xc0006226c0?})
        /home/axel/go/pkg/mod/github.com/ipfs/kubo@v0.20.0/core/bootstrap/bootstrap.go:89 +0xdc
github.com/jbenet/goprocess.(*process).Go.func1()
        /home/axel/go/pkg/mod/github.com/jbenet/goprocess@v0.1.4/impl-mutex.go:134 +0x36
created by github.com/jbenet/goprocess.(*process).Go
        /home/axel/go/pkg/mod/github.com/jbenet/goprocess@v0.1.4/impl-mutex.go:133 +0x238
exit status 2