Ubuntu: Failed to lock the package manager
This problem occurs when some package manager is already running in the back group. You can't have two or more package management running on a Ubuntu system. Because a package manager locks the installation path of the system and gets an exclusive access of it and blocks any other software to have access on it simultaneously. check if synaptic package manager or update manager is running on the system.
If yes, stop the applications and then try again to install the app. This should work perfectly.
Hi, Donal Bambie
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I can suggest you some good forums, which are listed below:
Take a look at the post in those forum.