2
you need to install "dugris" form fix.... this will fix the issue...
http://prdownloads.sourceforge.net/xfr/xoops2015_xoopsform_dugris.zip?download
install in class/xoopsform
more info here:
https://xoops.org/modules/newbb/viewtopic.php?topic_id=53524&viewmode=flat&order=ASC&start=0
jeffgr