checkbox error

Hi, I have checkbox in the end of my form for GDPR. It works fine until latest version. When I submit form it shows error message “the given data was invalid”

text in options was:

“Souhlasím se zve?ejněním v Národopisné revui v ti?těném i elektronickém formátu, s licen?ními podmínkami a se zpracováním osobních údaj? pro ú?ely pracovně právní agendy. / <strong>I hereby grant my consent to publish my contribution in the printed and electronic version of Journal of Ethnology, with the license terms and conditions, and with the processing of personal data for the purposes of labor law.</strong>”

When its shorted to one word “Souhlasím”, then error disapear and form submited

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