我正在使用R对包含100多个变量的数据集进行因子分析，即
FA <- fa (r=co_fa_data, nfactors=20, rotate="varimax",fm = "minres")
但是当我运行命令时会抛出错误：
The estimated weights for the factor scores are probably incorrect. Try a
different factor extraction method. Error in UseMethod("conditionCall") : no
applicable method for 'conditionCall' applied to an object of class "NULL" In
addition: Warning messages: 1: In cor.smooth(R) : Matrix was not positive
definite, smoothing was done.
如何避免此类错误并进行因子分析？