query: 404 errors when attempting to upgrade from 16.04 to 18.04
positive_passages.docid: 1520
positive_passages.text: How to install software or upgrade from an old unsupported release?
negative_passages.docid: 86777
negative_passages.text: Distribution upgrade problem "No new release found"
negative_passages.docid: 421
negative_passages.text: How do I update a Drupal distribution to a newer version?
negative_passages.docid: 147407
negative_passages.text: Apt-get fails on 16.04 or 18.04 installing mongodb
negative_passages.docid: 41519
negative_passages.text: What can I do if a package is not available on the newest version of Ubuntu (18.04) but is available on older versions?
negative_passages.docid: 24603
negative_passages.text: apt-get upgrade gives "403 forbidden" error
negative_passages.docid: 4305
negative_passages.text: How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
negative_passages.docid: 11166
negative_passages.text: "Require Installation Of Untrusted Packages" while upgrading with the update manager
negative_passages.docid: 80233
negative_passages.text: Upgrade to 20.04 from 19.10 isn't available
negative_passages.docid: 20399
negative_passages.text: How do I upgrade from 14.04 LTS to 16.04.1 LTS?
negative_passages.docid: 8526
negative_passages.text: Upgrading from Ubuntu 16.04 to 18.04 broke the system completely!
negative_passages.docid: 140850
negative_passages.text: Why does do-release-upgrade on Xubuntu running version 18.04 not offer to update to 20.04.1?
negative_passages.docid: 46034
negative_passages.text: Migrate site from dev environment to production server - 404 errors
negative_passages.docid: 133
negative_passages.text: How can I fix a 404 Error when using a PPA or updating my package lists?
negative_passages.docid: 15687
negative_passages.text: How do I resume a release upgrade?
negative_passages.docid: 56150
negative_passages.text: Can't upgrade/update ubuntu 18.04 as apt/dpkg error is showing up
negative_passages.docid: 65099
negative_passages.text: Unable to install any updates through update manager/apt-get upgrade