# Installing Jekyll SEO Tag causes Liquid Exception: Can't convert Hash into String

**URL:** <https://talk.jekyllrb.com/t/installing-jekyll-seo-tag-causes-liquid-exception-cant-convert-hash-into-string/6456>\
**Category:** Help\
**Created:** [September 20, 2021, 3:48pm UTC](https://talk.jekyllrb.com/t/installing-jekyll-seo-tag-causes-liquid-exception-cant-convert-hash-into-string/6456 "2021-09-20T15:48:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![andreylangovoy](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.jekyllrb.com/andreylangovoy/32/3909_2.png) [@andreylangovoy](https://talk.jekyllrb.com/u/andreylangovoy)\
**Post date:** [September 20, 2021, 3:48pm UTC](https://talk.jekyllrb.com/t/installing-jekyll-seo-tag-causes-liquid-exception-cant-convert-hash-into-string/6456/1 "2021-09-20T15:48:10Z")

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I am trying to install Jekyll SEO Tag as described [here](https://github.com/jekyll/jekyll-seo-tag/blob/master/docs/installation.md).

When I add {% seo %} to my **head** section, I am getting the following error - **Liquid Exception: Can’t convert Hash into String. in /\_layouts/default.html**

head.html is located in the \_includes folder and is included into the default.html as {% include head.html %}

What can cause this error?

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<div class="post-metadata">

**Author:** ![ashmaroli](https://avatars.discourse-cdn.com/v4/letter/a/df705f/32.png) [@ashmaroli](https://talk.jekyllrb.com/u/ashmaroli)\
**Post date:** [September 20, 2021, 6:49pm UTC](https://talk.jekyllrb.com/t/installing-jekyll-seo-tag-causes-liquid-exception-cant-convert-hash-into-string/6456/2 "2021-09-20T18:49:29Z")

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Please post the full error message from running one of the following:

`bundle exec jekyll build --trace`

`jekyll build --trace`