No phenotype name specified, defaulting to 'outcome'. Error in `[[<-.data.frame`(`*tmp*`, type, value = "outcome") : replacement has 1 row, data has 0

No phenotype name specified, defaulting to 'outcome'.Error in [[<-.data.frame(*tmp*, type, value = "outcome") : replacement has 1 row, data has 0
这个报错来自“TwoSampleMR”包。

报错原因是exposure和outcome没有重合的SNP位点。