Testing this comes up with the error, I think it has to do with the ‘drag and drop’ function itself:
*** Settings ***
https://robotframework-browser.org/
Library Browser
#Library SeleniumLibrary run_on_failure=nothing
#Library SeleniumLibrary
*** Test Cases ***
Example Test 23292
Browser.OPEN BROWSER https://obstaclecourse.tricentis.com/Obstacles/23292
# https://marketsquare.github.io/robotframework-browser/Browser.html#Drag%20And%20Drop
# waarom vindt ie er met tester 1 en met rbfw 6?
# //*[contains(text(),'1')][1] and //*[contains(text(),'Stefan')]
${regel}= Get Element xpath=//*[contains(text(),'Write recipe')]
DRAG AND DROP ${regel} id=completed-tasks
sleep 3s
DRAG AND DROP xpath=//*[contains(text(),'1')] id=completed-tasks
sleep 3s
DRAG AND DROP xpath=//*[contains(text(),'2')] id=completed-tasks
sleep 3s