Issue
The following error can be found when creating a workflow via K2 for SharePoint on Site Collection level with certain special characters, for example "gestión de documentos".
In Google Chrome: VM1664:123 URIError: URI malformed
In Internet Explorer: URIError: The URI to be decoded is not a valid encoding
Error Code


Resolution
Edit and remove the special characters from the Site Title and reactivate the Site Collection, this will resolve the issue.