I got an error while upgrading. It asked me to manually use the command "sudo dpkg --autoconfig -a". But when I run the command it opened up a new blue windows which told me that the existing postgresql 12 was out of date and should upgrade to postgresql 13
and there was an OK button at the end. For some reason I am unable to press the ok button. If I try upgrading with the window open it shows me that something is locked something like "frontend-lock".If I try upgrading after closing the window it shows me the 1st error and asks me to run the former command manually. Please help ??
And thanks in advance.
