Attempting to complete Trailhead for building a flow (Customer Satisfaction Survey).  I get the error message above when attempting to verify I have done the exercise correctly. I have done everything correctly and verified everything (the record does exist with correct field values) but still keep getting this error message, which is strangely worded ("Could find a Survey...) not ("Could NOT find a Survey...").  Any help/suggestions appreciated.  

The process works fine, I have tested it. When I click on "Check Challenge", this is what I get:

Challenge not yet complete... here's what's wrong: 
There was an unexpected error in your org which is preventing this assessment check from completing: System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_EXECUTE_FLOW_TRIGGER, The record couldn’t be saved because it failed to trigger a flow. 
A flow trigger failed to execute the flow with version ID 3012800000001r1. 
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