Title: Undefined array key “default_lang”
Last modified: December 3, 2021

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# Undefined array key “default_lang”

 *  [motchju](https://wordpress.org/support/users/motchju/)
 * (@motchju)
 * [4 years, 6 months ago](https://wordpress.org/support/topic/undefined-array-key-default_lang/)
 * Hello,
 * As soon as I activate the plugin I have this error:
 * Undefined array key “default_lang”
 * The website is using the Multisite version and as per recommendation([https://polylang.pro/doc/is-polylang-compatible-with-multisite/](https://polylang.pro/doc/is-polylang-compatible-with-multisite/)),
   it’s was activated locally (and not globally)
 * My php version is 8.0.12
 * Any help is welcome
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fundefined-array-key-default_lang%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [Chouby](https://wordpress.org/support/users/chouby/)
 * (@chouby)
 * [4 years, 6 months ago](https://wordpress.org/support/topic/undefined-array-key-default_lang/#post-15135928)
 * Hello,
 * Could you please provide the complete error message and the steps to reproduce
   the error?

Viewing 1 replies (of 1 total)

The topic ‘Undefined array key “default_lang”’ is closed to new replies.

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## Tags

 * [multisite](https://wordpress.org/support/topic-tag/multisite/)

 * 1 reply
 * 2 participants
 * Last reply from: [Chouby](https://wordpress.org/support/users/chouby/)
 * Last activity: [4 years, 6 months ago](https://wordpress.org/support/topic/undefined-array-key-default_lang/#post-15135928)
 * Status: not resolved