While testing the B2Jcontact i had it on publised, i discovered that my current contact (in proforms basic) didnt work anymore

Fatal error: Cannot redeclare parameters() (previously declared in /home/ellenvanbatenburg.nl/public_html/iloveworkshops/administrator/components/com_proforms/includes/functions.php:63) in /home/ellenvanbatenburg.nl/public_html/iloveworkshops/components/com_b2jcontact/router.php on line 26

the thing is i would like to have my current contact form still working, while testing on another b2j contact form first if it works it is what it is etc before i throw out en delete proforms basic

can anybody help?