Well, not going through the full log, however there are warnings in there about data not matching input format:
NOTE: Invalid data for dispensing_provider_identifier in line 5506983 15-18.RULE: ----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0 5506983 2803549,78124,<UK>,66685100101,15.50 36id=2803549 issuer_identifier=78124 dispensing_provider_identifier=.
national_drug_code=66685100101 allowed_total_cost_amount=15.5
The drug_dispensing variable is numeric, expecting a number, you have <UK> which is character, therefore this will fail.