Hundreds of keytool errors after upgrade

[jered]

I'm running 8.8.15 on Ubuntu 18.04, and as of about two patches ago I now get hundreds of errors of the form below:

keytool error: java.io.FileNotFoundException: /opt/zimbra/.saveconfig/zimbra-openjdk-cacerts-1.0.5-1zimbra8.7b1.14.04/tmp/ubuntu14_64/hbuo9a17cf/00eplbi2_h.der.crt (No such file or directory)
/bin/chown: cannot access '/opt/zimbra/.saveconfig/zimbra-openjdk-cacerts-1.0.5-1zimbra8.7b1.14.04/tmp/ubuntu14_64/hbuo9a17cf/00eplbi2_h.der.crt': No such file or directory
ERROR: Can't read file '/opt/zimbra/.saveconfig/zimbra-openjdk-cacerts-1.0.5-1zimbra8.7b1.14.04/tmp/ubuntu14_64/hbuo9a17cf/00eplbi2_h.der.crt'

This doesn't seem to cause any functional problems, but it's annoying and takes several minutes to work through. I'm *guessing* from the path names that this has something to do with previous upgrades from Ubuntu 14.04/16.04 to 18.04.

Any pointers on how to fix? Here are the top level contents of my /opt/zimbra/.saveconfig:

8.7.11.GA.1854.UBUNTU14.64
8.7.1.GA.1670.UBUNTU14.64
8.7.3.GA.1750.UBUNTU14.64
8.7.4.GA.1730.UBUNTU14.64
8.7.5.GA.1764.UBUNTU14.64
8.8.10.GA.3039.UBUNTU14.64
8.8.11.GA.3737.UBUNTU14.64
8.8.12.GA.3794.UBUNTU14.64
8.8.15.GA.3869.UBUNTU14.64
8.8.9.GA.2055.UBUNTU14.64
cacerts
ca.key
ca.pem
config.save
keystore
localconfig.xml
nginx.crt
nginx.key
slapd.crt
slapd.key
smtpd.crt
smtpd.key
zimbra-openjdk-cacerts-1.0.5-1zimbra8.7b1.14.04
zimbra-openjdk-cacerts-1.0.5-1zimbra8.7b1.16.04
zimbra-openjdk-cacerts-1.0.5-1zimbra8.7b1.18.04
zimbra-openjdk-cacerts-1.0.7-1zimbra8.7b1.18.04