jQuery : SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON

jQuery : SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON
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jQuery : SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON
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of jQuery column JSON.parse: unexpected SyntaxError: character : at 1 line 2 the JSON