• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

Connect with a domain name

Looks like sudo is not correctly configured on your server. In this case, you have to login to the server as root account. Prompt in the command line will be # instead of $ after that.
Could you suggest how I login to the server as root account.
 
You have to learn basic Linux knowledge first.
I suggest you contact Plesk Support Team if you are not familiar with Linux administration.
 
I can now access root panel. Apparently this command was run:

mysql> UPDATE IP_Addresses SET main='true' WHERE ip_address='3.109.31.170';

But when I try to remove the other IP address with this command: UPDATE IP_Addresses SET main='false' WHERE ip_address='172.26.3.52';, I get Command Not Found.

Also, I tried to remove from the Plesk admin panel in Tools and Settings. Getting this message: Error: Cannot remove the IP address 172.26.3.52 because it is the primary IP address of a network interface.

There are three websites (which I think denote network interface/Applications): All the three have IP address as 3.109.31.170 (https://www.canva.com/design/DAE1CB...nshare&utm_medium=link&utm_source=sharebutton)

Kindly guide what to do next.
 
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