[Evolution] evolution 2.26.1 ubuntu can't empty trash

[John Ross <john mystichill net>]

Looking at some forums, it seems this bug has been occurring for YEARS!
When you go to empty the trash, the GUI gives a message "Error expunging folder". If you start E from the command line, attempting to empty the trash gives this:
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 (evolution:7072): camel-local-provider-WARNING **: Didn't get the next message where I expected (301640926) got 301852497 instead

(evolution:7072): camel-WARNING **: Error storing '~/.evolution/mail/local/Inbox (mbox)': Summary and folder mismatch, even after a sync

(evolution:7072): camel-WARNING **: Error storing '~/.evolution/mail/local/Sent (mbox)': Error storing '~/.evolution/mail/local/Inbox (mbox)': Summary and folder mismatch, even after a sync
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The following script deletes all the the .index .data and .meta files and will temporarily fix the situation, but it soon recurs:

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#!/bin/bash
export LANG=C
set -e
evolution --force-shutdown
for each in index data cmeta; do
 find ~/.evolution/mail/local -type f -iname "*.$each" | xargs rm
done
rm ~/.evolution/mail/local/folders.db
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What is going on? Am I missing something?

John Ross