error1
---
title: "Myfirst"
date: 2018-04-05T19:08:00+08:00
draft: false
tags: ['hello','hi','hey']
categories: 'aaa'
---
Change detected, rebuilding site
ERROR 2018/04/05 21:13:55 in .Render: Failed to execute template "theme/post/summary.html": template: theme/post/summary.html:8:19: executing "theme/post/summary.html" at <.>: range can't iterate over aaa
Total in 26 ms
value of tags and categories must be inside an array, enclosed by []
solution
categories: ['aaa']
