[Bug 1830459] [NEW] i am unable to upgrade from 16.04 to 19 .i get the below error "cannot calculate upgrade"despite using ppa purge

Public bug reported: This is the error I get despite using ppa purge (removed deadsnakes and graphics-drivers) ) An unresolvable problem occurred while calculating the upgrade. This was likely caused by: * Unofficial software packages not provided by Ubuntu Please use the tool 'ppa-purge'

[Bug 1830459] Re: i am unable to upgrade from 16.04 to 19 .i get the below error "cannot calculate upgrade"despite using ppa purge

** Attachment added: "Screenshot from 2019-05-25 09-14-07.png" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1830459/+attachment/5266430/+files/Screenshot%20from%202019-05-25%2009-14-07.png -- You received this bug notification because you are a member of Ubuntu

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