The issue is with the URL you've added to your site.  You've added this:

http://www.franklin.nl/elektronica/?tt=4123_253260_178666_&r=https://www.franklin.nl/secure/_none/artikel/artikelhome/5986-universeel-bqc-xgp10xu-1/?src=5

It should be this:

http://www.franklin.nl/elektronica/?tt=4123_253260_178666_&r=https://www.franklin.nl/secure/_none/artikel/artikelhome/5986-universeel-bqc-xgp10xu-1/?src=5

A query string should not contain: &

All occurrences of & that appear in the query string should be changed to "&".