No matching key exchange algorithm found

I am getting this error when attempting to connect to a Cisco device:
ERROR:root:Error connecting to 146.40.134.4: No matching key exchange algorithm found, sent curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,ecdh-sha2-1.3.132.0.10,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group15-sha512,diffie-hellman-group16-sha512,diffie-hellman-group17-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256@ssh.com,diffie-hellman-group14-sha1,rsa2048-sha256 and received diffie-hellman-group1-sha1

Here is the python code:
''' async with asyncssh.connect(hostname, username=username, password=password, known_hosts=None, encryption_algs="+aes256-cbc") as conn:
result = await conn.run('show version')
# config = result.stdout
# return True, config
print(".", end ="",flush=True)
return True
'''
I tried adding the diffie-hellman-group1-sha1 in the encryption_algs but I guess I don't know how because I kept getting errors. From the documentation it looks like I should be able to add multiple algos as a list but cannot get it to work.

No repository file or test is named in the report. Start by locating the action's SSH invocation and reproduce the Cisco connection using the shown asyncssh.connect call; then verify which option controls key-exchange algorithms rather than encryption algorithms. Done means the action connects successfully to the reported Cisco device with a documented configuration.

Written by the indexing model from the issue text.