NodeBB version

v4.6.0

NodeBB git hash

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NodeJS version

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Installed NodeBB plugins

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Database type

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Database version

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Exact steps to cause this issue

When various setting-field in the admin panel contains the letters 'æøå' - this causes the theme config to not be instantiated. Console displays error for "badly escaped characters" in config. The theme is a custom child theme of the Harmony theme, and copies Harmony's method for instantiating config and app, as Harmony does in "header.tpl".

What you expected

I expect 'æøå' to be allowed in setting-fields and for theme config to be unaffected by them.

What happened instead

No response

Anything else?

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