Cbc-pillowfight against 7.0-beta Errors

On my home computers running Ubunutu 20.04 I Installed CouchBase 7.0-Beta.
On a separate machine I downloaded and installed libcouchbase to use cbc-pillowfight against the cluster. But I’m getting a weird error below.
Gave the user Full Cluster Admin access

^Capp1@app1:/etc/apt$ cbc-pillowfight -U couchbase://192.168.1.231/test -u test -P 123456 -I 500000 -B 1000 --json -R --verbose
Running. Press Ctrl-C to terminate…
0ms [I760f8147e58abda2] {3044} [INFO] (instance - L:503) Version=3.1.3, Changeset=7739e685e579fb981eda1fdf89f7d6fcd5b2ebc9
0ms [I760f8147e58abda2] {3044} [INFO] (instance - L:504) Effective connection string: couchbase://192.168.1.231/test?username=test&console_log_level=2&. Bucket=test
61ms [I760f8147e58abda2] {3044} [INFO] (instance - L:195) DNS SRV lookup failed: LCB_ERR_UNKNOWN_HOST (1049). Ignore this if not relying on DNS SRV records
61ms [I760f8147e58abda2] {3044} [INFO] (bootstrap - L:272) Requested network configuration: heuristic
62ms [I760f8147e58abda2] {3044} [INFO] (cccp - L:176) Requesting connection to node 192.168.1.231:11210 for CCCP configuration
62ms [I760f8147e58abda2] {3044} [INFO] (connection - L:485) <192.168.1.231:11210> (SOCK=6f6df561a451f8d8) Starting. Timeout=2000000us
63ms [I760f8147e58abda2] {3044} [INFO] (connection - L:153) <192.168.1.231:11210> (SOCK=6f6df561a451f8d8) Connected established
91ms [I760f8147e58abda2] {3044} [INFO] (confmon - L:183) Setting initial configuration. Received via CCCP (bucket=“test”, rev=-1:72803, address=“192.168.1.231”)
91ms [I760f8147e58abda2] {3044} [INFO] (bootstrap - L:91) Selected network configuration: “default”
117ms [I760f8147e58abda2] {3045} [INFO] (connection - L:485) <192.168.1.232:11210> (SOCK=5e33c94eb58fc73b) Starting. Timeout=2500000us
117ms [I760f8147e58abda2] {3045} [INFO] (connection - L:485) <192.168.1.233:11210> (SOCK=565d61014190721b) Starting. Timeout=2500000us
117ms [I760f8147e58abda2] {3045} [INFO] (connection - L:485) <192.168.1.234:11210> (SOCK=a2d00ce6488c8e58) Starting. Timeout=2500000us
118ms [I760f8147e58abda2] {3045} [INFO] (connection - L:153) <192.168.1.232:11210> (SOCK=5e33c94eb58fc73b) Connected established
118ms [I760f8147e58abda2] {3045} [INFO] (connection - L:153) <192.168.1.233:11210> (SOCK=565d61014190721b) Connected established
118ms [I760f8147e58abda2] {3045} [INFO] (connection - L:153) <192.168.1.234:11210> (SOCK=a2d00ce6488c8e58) Connected established
161ms [I760f8147e58abda2] {3045} [WARN] (server - L:386) <192.168.1.231:11210> (CTX=0x7f279c31e5c0,memcached,SRV=0x55ac49ca5360,IX=0) Received server error EINVAL (0x4) on packet: OP=0xbb, RC=0x4, SEQ=0
161ms [I760f8147e58abda2] {3045} [WARN] (server - L:386) <192.168.1.231:11210> (CTX=0x7f279c31e5c0,memcached,SRV=0x55ac49ca5360,IX=0) Received server error EINVAL (0x4) on packet: OP=0xbb, RC=0x4, SEQ=2
161ms [I760f8147e58abda2] {3045} [WARN] (server - L:386) <192.168.1.231:11210> (CTX=0x7f279c31e5c0,memcached,SRV=0x55ac49ca5360,IX=0) Received server error EINVAL (0x4) on packet: OP=0xbb, RC=0x4, SEQ=8

3242ms [I760f8147e58abda2] {3045} [WARN] (server - L:386) <192.168.1.234:11210> (CTX=0x7f279c31fed0,memcached,SRV=0x55ac49cda360,IX=3) Received server error EINVAL (0x4) on packet: OP=0xbb, RC=0x4, SEQ=44424

I also tried

-U couchbase://192.168.1.231/test ._default._default

but just got not a bucket errror.

Went to /opt/couchbase/bin/ on the data node looks like that one works fine. I get ops to the cluster. (BELOW)
I though I followed the steps on docs for Ubuntu 20.04:
https://docs.couchbase.com/c-sdk/current/hello-world/start-using-sdk.html#configuring-apt-repositories-debian-ubuntu
correctly

 ./cbc-pillowfight -U couchbase://192.168.1.231/test -u test -P 123456 -I 500000 -B 1000 --json -R --verbose

Running. Press Ctrl-C to terminate...

0ms [Ic53ad56d9080fe54] {1622} [INFO] (instance - L:503) Version=3.0.7_8_g465188d3b1, Changeset=465188d3b1a85902e918a553d8ec71aeb903018a

0ms [Ic53ad56d9080fe54] {1622} [INFO] (instance - L:504) Effective connection string: couchbase://192.168.1.231/test?username=test&console_log_level=2&. Bucket=test

63ms [Ic53ad56d9080fe54] {1622} [INFO] (instance - L:195) DNS SRV lookup failed: LCB_ERR_UNKNOWN_HOST (1049). Ignore this if not relying on DNS SRV records

63ms [Ic53ad56d9080fe54] {1622} [INFO] (bootstrap - L:270) Requested network configuration: heuristic

63ms [Ic53ad56d9080fe54] {1622} [INFO] (cccp - L:176) Requesting connection to node 192.168.1.231:11210 for CCCP configuration

64ms [Ic53ad56d9080fe54] {1622} [INFO] (connection - L:485) <192.168.1.231:11210> (SOCK=d557d3d42c6f352b) Starting. Timeout=2000000us

64ms [Ic53ad56d9080fe54] {1622} [INFO] (connection - L:153) <192.168.1.231:11210> (SOCK=d557d3d42c6f352b) Connected established

85ms [Ic53ad56d9080fe54] {1622} [INFO] (confmon - L:179) Setting initial configuration. Received via CCCP (bucket="test", rev=72803, address="192.168.1.231")

85ms [Ic53ad56d9080fe54] {1622} [INFO] (bootstrap - L:91) Selected network configuration: "default"

92ms [Ic53ad56d9080fe54] {1623} [INFO] (connection - L:485) <192.168.1.232:11210> (SOCK=89d7727183db79fd) Starting. Timeout=2500000us

92ms [Ic53ad56d9080fe54] {1623} [INFO] (connection - L:485) <192.168.1.233:11210> (SOCK=783a5d94bb932c1e) Starting. Timeout=2500000us

93ms [Ic53ad56d9080fe54] {1623} [INFO] (connection - L:485) <192.168.1.234:11210> (SOCK=783f8a9f6818f127) Starting. Timeout=2500000us

93ms [Ic53ad56d9080fe54] {1623} [INFO] (connection - L:153) <192.168.1.232:11210> (SOCK=89d7727183db79fd) Connected established

93ms [Ic53ad56d9080fe54] {1623} [INFO] (connection - L:153) <192.168.1.234:11210> (SOCK=783f8a9f6818f127) Connected established

93ms [Ic53ad56d9080fe54] {1623} [INFO] (connection - L:153) <192.168.1.233:11210> (SOCK=783a5d94bb932c1e) Connected established

^CS/SEC: 27499

Termination requested. Waiting threads to finish. Ctrl-C to force termination.

I downloaded the [SDK Doctor ] GitHub - couchbaselabs/sdk-doctor: Application-server-side cluster connection diagnostics. on the app node. I can run it if needed. the output is very verbose.

installed CouchBase Server 7.0-beta on the app machine … using /opt/couchbase/bin/cbc-pillowfight to create a load on the cluster.