I installed User Role Editor Pro on a WordPress 4.9.1 and PHP version 5.3.3
I try to activate the plugin but it throws this error
Can’t activate plugin, fatal error
Parse error: syntax error, unexpected ‘[‘ in /[my path]/htdocs/wp-content/plugins/user-role-editor-pro/pro/includes/classes/other-roles-access.php on line 364
Before the PRO version, I used the non-pro version without any problem.
Is the PHP version the problem? I cannot update it though
Can you help me?