I have backed up data from an Couchbase 5.5 cluster, using the following command:

```
$ cbbackup http://couchbase:8091 ~/cbbackup -u *** -p ***

```

Then, I copied the `~/cbbackup` files out of the cluster and onto my local machine.
I have a new Couchbase 6.5 cluster that I want to migrate the data to.
So then I copied `~/cbbackup` in to the new cluster.

However, when I try to restore it in the Couchbase 6.5 cluster this happens:

```
$ cbrestore ~/cbbackup http://couchbase:8091 -u *** -p ***
2020-05-23 14:11:47,209: s0 error: async operation: error: conn.sendall() exception: [Errno 104] Connection reset by peer on sink: http://couchbase:8091(b'default'@b'couchbase-0001.couchbase.couchbase.svc:8091')
2020-05-23 14:11:47,221: s2 error: async operation: error: conn.sendall() exception: [Errno 104] Connection reset by peer on sink: http://couchbase:8091(b'default'@b'couchbase-0003.couchbase.couchbase.svc:8091')
2020-05-23 14:11:47,226: s1 error: async operation: error: conn.sendall() exception: [Errno 104] Connection reset by peer on sink: http://couchbase:8091(b'default'@b'couchbase-0002.couchbase.couchbase.svc:8091')
error: conn.sendall() exception: [Errno 104] Connection reset by peer

```

How can I restore the backup from Couchbase 5.5 to my Couchbase 6.5 cluster?