Error JS

Hi !
i’ve just installed an english version of my website; and ihav this error on further products :

underscore.min.js?ver=1.8.3:5 Uncaught TypeError: Cannot read property 'replace' of undefined
    at Function.m.template (underscore.min.js?ver=1.8.3:5)
    at wp-util.min.js?ver=4.9.6:1
    at HTMLFormElement.VariationForm.onFoundVariation (add-to-cart-variation.js?ver=2.0.0:222)
    at HTMLFormElement.dispatch (jquery.js?ver=1.12.4:3)
    at HTMLFormElement.r.handle (jquery.js?ver=1.12.4:3)
    at Object.trigger (jquery.js?ver=1.12.4:3)
    at Object.a.event.trigger (jquery-migrate.min.js?ver=1.4.1:2)
    at HTMLFormElement.<anonymous> (jquery.js?ver=1.12.4:3)
    at Function.each (jquery.js?ver=1.12.4:2)
    at a.fn.init.each (jquery.js?ver=1.12.4:2)

the other product are OK… i try to used the same template and i ‘ve th same problem;
can you tell me why and how fixed it ?
thanks
Sophie

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