error while exporting workflow

i am getting error while exporting the workflow. can anyone tell why this error is showing. the screenshot is attached

Hi,

I tracked down a past similar post and the problem was caused by a corrupted installation. Re-installing KNIME properly solved the issue.

https://tech.knime.org/forum/knime-general/error-message-export-of-workflows-did-not-succeed-orgknimecoreutilknimefileutili

Not saying this is your case, but it might be worth trying.

Cheers,
Marco.