Wordpress, plugin fixes

This is a small project for a sharp Wordpress-plugin developer. I have purchased a Wordpress theme. There is a plugin (1) "Font I Want" that does not install and (2) "Typed JS" that does not activate. Error messages: (1) "Fatal error: Cannot use 'Object' as class name as it is reserved in /customers/8/2/b/[login to view URL] on line 16" (2) "Something went wrong with the plugin API." and "File not found". Primarily (1) is most important issue to address. If the plugin itself cannot be fixed, then another solution for retrieving and implementing fonts is required for this project. For other font solutions, for instance for manual identification of fonts and font properties, see reference site [login to view URL] (for example, I use Fount to identify web fonts). If existing plugin solution is complex, alternative solutions for implementing the fonts may be accepted, as long as font properties can be edited from backend in a proper way. With regards, Mr. Cross