Uncaught TypeError: this.ajaxForm is not a function
at a.fn.init.$.fn.wpcf7InitForm (jquery.jvcf7_validation.js:14)
at HTMLDocument.<anonymous> (jquery.jvcf7_validation.js:10)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at Function.ready (jquery.js:2)
at HTMLDocument.K (jquery.js:2)
Which version of the plugin you are currently using ? Please update to the latest version. Contact Form 7 no more uses ajaxForm jquery library and our update should fix the issue.