I am attempting to finish the challenge on the Implement the Flow with a Custom Button and I keep getting this error:

There was an unhandled exception. Please reference ID: SZSFUQIT. Error: Faraday::ClientError. Message: UNKNOWN_EXCEPTION: An unexpected error occurred. Please include this ErrorId if you contact support: 2112147162-69831 (-1674422456)

I have sent emails to suppor but no reply as of yet.

Set Up a Weather Company Data Service on IBM Bluemix.

There is no create in IBM Bluemix setup of the Weather Company Data. There is an upgrade wihich requires payment. 

Anybody else experiencing this?

The challenge is to search for the inserted record with an inline SOSL search, using Execute Anonymous.

This is what I did using Execute Anonymous Window
 

List<List<sObject>> searchList = [FIND 'Mission Control' IN ALL FIELDS 
                                  RETURNING Contact(FirstName, LastName,
                                  Phone, Email, Description)];
Contact[] searchContacts = (Contact[])searchList[0];
System.debug('Found the following contacts:');
for (Contact c : searchContacts) {
   System.debug('"'+c.LastName + ', ' + c.FirstName+'"');
}

But still there's an error when I check the challenge.

Challenge Not yet complete... here's what's wrong: 
Could not find the contact's name in the debug log. Be sure to run a query for your record, and to write your contact's name to the debug log using the System.debug() method.