The Error Message "Oh no! Something has gone wrong." Is Displayed When the VNC Is Started.

Symptom

When MindStudio Insight is started in VNC mode in the Linux OS, the error message "Oh no! Something has gone wrong." is displayed, as shown in Figure 1.

Figure 1 Error message

Cause Analysis

AllowTcpForwarding may not be enabled.

In some cases, VNC needs to be connected through the SSH channel, and TCP forwarding is the key to this function. If AllowTcpForwarding is disabled, SSH does not allow port forwarding. As a result, the VNC service cannot be accessed through the SSH channel. After AllowTcpForwarding is enabled, you can connect to the VNC service through the SSH channel locally or remotely.

Solution

Configure the SSH server.

1. Go to the /etc/ssh directory and open the sshd_config file.
2. Change AllowTcpForwarding in the file to yes.
3. Run the following command to restart the SSH service:

   systemctl restart sshd

4. After the restart is successful, start the VNC in a new window.