lscmctl tool suddenly start to generate error

#1
Hi,
I'm using lscmctl tool to scan and enable cache on all WP installation for a while.
But, last several days tools generate error and don't work.

I'm uisng this command:
Code:
lscmctl scan -e
Error which I get:

Code:
Automatically updating lscmctl script and required shared library
Downloading latest shared code tar file...
Checking tar file md5...
Removing existing shared code directory...
Extracting downloaded shared code...
Removing local shared code tar file...
Updating lscmctl script...

Done!

Fatal error: Call to undefined function Lsc\Wp\mb_convert_encoding() in /usr/local/lsws/add-ons/webcachemgr/src/WPInstallStorage.php on line 237
Any idea what can be a problem?
 
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