Uncaught initial bisect points must have opposite signs

[leewensheng]

[
{sets:['行业兴趣人群'],size:323697564},
{sets:['本品了解'],size:203382183},
{sets:['本品吸引'],size:195035862},
{sets:['本品问询'],size:63038111},
{sets:['本品了解','行业兴趣人群'],size:56497283},
{sets:['本品吸引','行业兴趣人群'],size:125644736},
{sets:['本品问询','行业兴趣人群'],size:63038111}
]

[leewensheng]

{sets:['本品问询'],size:63038111},
{sets:['本品问询','行业兴趣人群'],size:63038111}

two sets is equal