Cleantalk + phpBB 3.2 install issue

I’ve just moved a phpBB 3.2 board and wanted to re-install cleantalk extension but in the admin control panel extensions manager I am seeing an error as follows:

The “cleantalk/antispam” extension is not valid.
The requested file could not be found: ./../ext/cleantalk/antispam/composer.json

If I go to the Extensions tab in the ACP I get an error message:

General Error
Cannot find module ./../includes/acp/\cleantalk\antispam\acp\main_module.php

BACKTRACE

FILE: (not given by php)
LINE: (not given by php)
CALL: msg_handler()

FILE: [ROOT]/includes/functions_module.php
LINE: 573
CALL: trigger_error()

FILE: [ROOT]/adm/index.php
LINE: 82
CALL: p_master->load_active()

When I uploaded the latest version of Cleantalk extension for phpBB there was no cleantalk folder/sub-directory until I added the new extension.

The errors above were the same before and after adding the extension files to /ext

Any ideas?