Major Description
When an error occurs it results in transactions being logged twice, an example is:
1408720751.393 0 72.52.91.30 ERR_CONNECT_FAIL 404 0 Accept-Language: https://en-US,en;q=0.8/ - NONE/- - https://en-US,en;q=0.8/ f1 f2 f3 f4 1408720751.393 0 72.52.91.30 ERR_CONNECT_FAIL 404 1820 Accept-Language: https://en-US,en;q=0.8/ - NONE/- text/html https://en-US,en;q=0.8/ f1 f2 f3 f4