404 error when updating to version 8.6.1

Hi!

I have a multilingual website translated with WPML plugin. However when I make an update to the latest version my Russian and Latvian pages are not displayed – error 404 is shown, whereas English one – works, as this is the main language. I do have WooCommerce Multilingual & Multicurrency add-on, but its update didn’t help. Please advise.

*Currently I returned to back-up.

Thank you!

Marta

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