Could not insert new word matches

DEBUG MODE

INSERT INTO troublefreepool_search_wordmatch (post_id, word_id, title_match) SELECT 15766, word_id, 0 FROM troublefreepool_search_wordlist WHERE word_text IN ('pucks', 'acidic', 'addition', 'adding', 'chlorine', 'cya', 'means', 'constantly', 'borax', 'raise', 'occasionally', 'baking', 'soda', 'total', 'alkalinity', 'continously', 'rising', 'usually', 'causes', 'problems', 'towards', 'later', 'part', 'swimming', 'season', 'level', 'investment', 'pool', 'make', 'test', 'kit', 'fasdpd', 'full', 'set', 'tests', 'including', 'kits', 'great', 'one', 'think', 'shock', 'knowing', 'tell', 'add')

Line : 251
File : functions_search.php