Steps to reproduce the issue

Visit Content and try edit Options.

Expected result

Should let you edit content/category options

Actual result

An error has occurred.
0 Class 'Joomla\Component\Content\Administrator\Field\JPluginHelper' not found

System information (as much as possible)

Database Version
5.6.24
Database Collation
utf8mb4_unicode_ci
Database Connection Collation
utf8_general_ci
PHP Version
7.1.8
Web Server
Apache/2.4.27 (Win32) OpenSSL/1.1.0f PHP/7.1.8
WebServer to PHP Interface
apache2handler
Joomla! Version
Joomla! 4.0.0-dev Development [ Amani ] 31-March-2017 23:59 GMT

Additional comments