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Upgraded successfully from 16.04 to 18.04, then followed the tutorial for upgrade from 18.04 to 20.04. do-release-upgrade fails with “ERROR doUpdate() failed completely”. Lots of “ERROR IOError/SystemError”, but this one caught my eye:
ERROR IOError/SystemError in cache.update(): 'E:Failed to fetch https://repos.sonar.digitalocean.com/apt/dists/main/main/Contents-amd64.gz File has unexpected size (200 != 135). Mirror sync in progress? [IP: 151.101.17.7 443]
Where to start debugging this problem?
WildcatMedia
jeffs
0621335d663b4b699a60eb27e28153
accesstrax
Dwight Trumbower
admin
yimprogramming
samunyi90
1d6ce141ab5444dfb1ea2dd29cf4b1
Matt Fricker
joel9b158e40551b15093f213f