Issue No longer can connect to server via SSH/FTP after an error while updating plesk

[Davit S]

Hi there.

We can no longer connect to our server via SSH/FTP, it says "Connection closed by IP ADDRESS"...

We detected the strange line in update logs, while it tried to make update.

It says
"Checking whether the package dependencies are resolved.
Installing packages
E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem.

ERROR: An error occurred on attempt to install packages.
Attention! Your software might be inoperable.
Please contact product technical support."

We think it could be the cause/related why we can't connect via SSH/FTP.

Any Ideas?

Thank you very much.