Magento 2.4/PHP7.4

Good day,

Receive the following error from Magento 2.4

Deprecated: Array and string offset access syntax with curly braces is deprecated in /vendor/litespeed/module-litemage/Block/Backend/Cache/Management.php on line 89​

The server is running Centos 7; recently updated to Magento 2.4 with PHP7.4.8, PHPUnit 9.2.6 and MySQL 8.0.21.

Litespeed Web Server is on build 5.4.8 (build 4) with Litemage on version 2.1.6

The error occurs when going to System -> Tools -> Cache Management.