forestplot(labeltext = as.matrix(rs_forest[,1:4]),mean = rs_forest$V5,lower = rs_forest$V6,upper = rs_forest$V7,
           is.summary=c(F,F,T,T,F,T,T,F,T,T,T,T,F,T,T),zero = 1,boxsize = 0.4,lineheight = unit(8,'mm'),colgap = unit(2,'mm'),lwd.zero = 2,lwd.ci = 2,
           col=fpColors(box='#458B00',summary="#8B008B",lines = 'black',zero = '#7AC5CD'),xlab="The estimates",lwd.xaxis=2,lty.ci = "solid",graph.pos = 4)

代码如上，一直提示Error in lowest * 2 : non-numeric argument to binary operator，求大神指教啊