Hi there @pharma,
welcome to KNIME Community Forum!
What KNIME version do you use? Considering it does work on your computer while on colleague’s and KNIME Server does not it would indicate to me that some settings/preferences are different.
Additionally I share with you two links regarding this same error:
Explore it a bit and if you don’t find solution come back here and we’ll see what to do next. If you do feel free to share it with us 
Br,
Ivan