Using Categories Field Type 500's

[fmolina24]

Description

Adding a category to entry via the categories field 500's with the following error
Exception 'Error' with message 'Call to undefined method __TwigTemplate_b5921c1a9230f770268558667a922c55f928dde19b8004ca73d0e0625a986d80::getAttribute()

Steps to reproduce

1. Add Category Field to a Channel Entry.
2. Create a new entry try to add categories notice error.

Additional info

• Craft version: 3.0.0-beta.1
• PHP version: 7.0.8 (MAMP PRO)
• Database driver & version: MySQL 5.5.42
• Plugins & versions: Clean Install

[carlcs]

Already fixed in beta 2, see #1313

[fmolina24]

Thanks!