[SM-PLUGINS] Plugins - Avelsieve - Sieve Filters version 1.9.8) stopped working

[<sm...@gu...>]

squ...@li...
After updating SM to version squirrelmail-1.4.22, the 'Filters' hyperlink
that allows access to the installed Plugin - "Avelsieve - Sieve Filters
(version 1.9.8)" stopped working.

Currently, when the 'Filters" hyperlink is left-clicked; we are presented
with a blank page. However when we open any of our received emails we are
able to add individual rule(s) based on that particular emails'
details/data.

We are not able to use the plugin to edit any existing rules via the
'Filters' hyperlink.

After disabling the Avelsieve plugin, this will not disabled any of the
existing rules -- this is a problem for us.