Title: Version 3.4 invalid argument error
Last modified: May 25, 2023

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# Version 3.4 invalid argument error

 *  [Jeremy Varnham](https://wordpress.org/support/users/jvarn13/)
 * (@jvarn13)
 * [3 years ago](https://wordpress.org/support/topic/version-3-4-invalid-argument-error/)
 * After upgrading to 3.4, the following error is displayed:
 * `Warning: Invalid argument supplied for foreach() in […]/public_html/wp-content/
   plugins/polylang/include/language-factory.php on line 161`
   `Warning: Invalid 
   argument supplied for foreach() in […]/public_html/wp-content/plugins/polylang/
   include/language-factory.php on line 161``Warning: Invalid argument supplied 
   for foreach() in […]/public_html/wp-content/plugins/polylang/include/model.php
   on line 283`
 * Downgrading to 3.3.3 works, but now many front-end strings are no longer translated.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Chouby](https://wordpress.org/support/users/chouby/)
 * (@chouby)
 * [3 years ago](https://wordpress.org/support/topic/version-3-4-invalid-argument-error/#post-16767167)
 * Hello,
   Could you try to redo the update on a test site (clone of your production
   site)? If you still reproduce the notice, go to Languages > Settings > URL modifications
   and resave. Tell me if it solves your issue.
 *  Thread Starter [Jeremy Varnham](https://wordpress.org/support/users/jvarn13/)
 * (@jvarn13)
 * [3 years ago](https://wordpress.org/support/topic/version-3-4-invalid-argument-error/#post-16774039)
 * Thanks for your reply. I’ll need a few days to arrange this test. Thanks.
 *  Thread Starter [Jeremy Varnham](https://wordpress.org/support/users/jvarn13/)
 * (@jvarn13)
 * [3 years ago](https://wordpress.org/support/topic/version-3-4-invalid-argument-error/#post-16782333)
 * Resetting the permalinks solved ” front-end strings are no longer translated”(
   still on 3.3.3).
   I’ll clone and test upgrading as suggested at the weekend.
 * Thanks

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Version 3.4 invalid argument error’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Jeremy Varnham](https://wordpress.org/support/users/jvarn13/)
 * Last activity: [3 years ago](https://wordpress.org/support/topic/version-3-4-invalid-argument-error/#post-16782333)
 * Status: not resolved