Fatal Error update 3.0.7

[Movidadannunziana]

Hi, I upgraded to version 3.0.7 but I get this error

Fatal error: Call to undefined funzione is_customize_preview () in /home/offquatt/public_html/new/wp-content/themes/kleo/lib/options.php on line 2407

How can I fix?
Thank you

[Abe]

Hi, it seems you have a very old WordPress version. Please update to the latest WordPress 4.3

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[Movidadannunziana]

Hello,
thank you very much the pre fast response
Currently I have installed Kleo 2.4.1 and woocommerce 2.1.12, if I upgrade to wordpress 4.3 I have problems?
Thank you

[Abe]

Well no, not from what I know but please create a backup before you do that

Hi there!!! Help others from the community and mark any reply as solution if it solved your question. Mark as a solution

---
@ SeventhQueen we do our best to have super happy customers. Thanks for being our customer.

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