Error: Invalid Query

The web server received an invalid query because there are some arguments missing
The following arguments were received:

entityID=https://wordpress.tamk.fi/shibboleth&
lang=en

A valid SAML2 request needs at least the arguments entityID and return with valid values. Instead of the return argument, metadata for the Service Provider can include a DiscoveryResponse endpoint. Optionally the arguments isPassive, policy and returnIDParam can be supplied to automtically redirect the web browser to a Home Organisation and to do that automatically for the current web browser session

Please contact haka@csc.fi for assistance.