'How to connect EC2 instance to Netbeans remote server?

I am trying to connect my AWS ec2 ubuntu instance to the Netbeans. While I am trying to connect with Netbeans Remote server then, It is showing the following error message. I have searched all the threads but did not find the solution. I will be very thank full to you If you could help me to sort out this issue.

Connecting to mydomain.com port 22
Connection established
Remote version string: SSH-2.0-OpenSSH_8.9p1 Ubuntu-3
Local version string: SSH-2.0-JSCH-0.1.54
CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
SSH_MSG_KEXINIT sent
SSH_MSG_KEXINIT received
kex: server: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,[email protected],diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256
kex: server: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
kex: server: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
kex: server: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
kex: server: none,[email protected]
kex: server: none,[email protected]
kex: server:
kex: server:
kex: client: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
kex: client: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
kex: client: none
kex: client: none
kex: client:
kex: client:
kex: server->client aes128-ctr hmac-sha1 none
kex: client->server aes128-ctr hmac-sha1 none
SSH_MSG_KEX_ECDH_INIT sent
expecting SSH_MSG_KEX_ECDH_REPLY
Host 'mydomain.com' is known and matches the ECDSA host key
SSH_MSG_NEWKEYS sent
SSH_MSG_NEWKEYS received
SSH_MSG_SERVICE_REQUEST sent
SSH_MSG_SERVICE_ACCEPT received
Authentications that can continue: publickey,keyboard-interactive,password
Next authentication method: publickey
Disconnecting from mydomain.com port 22
QUIT
Goodbye

For more information, Please check the image. When I am trying run a test connection. Then I am getting the following error, Which is not giving any specification.