If we are talking about importing from github, then translation to version php 7.2 will help
The error occurs when in is_object (in the function urldecode_recursive configurable_reports/locallib.php:174) comes objects without a class definition, it returns false in 7.2 returns true
See http://php.net/manual/ru/function.is-object.php#refsect1-function.is-object-changelog