网状meta分析使用stata输入命令 ifplot

各位前辈，救救孩子吧，使用stata进行数据分析，输入命令ifplot _y _stderr _t1 _t2 study, tau2(loop) lab(A B C D E)

报错：Probably insufficient memory - Please, maximize memory number of variables and try again (ses memory and maxvar)

自己在网上查了一下（不知道对不对）输入set mem 50m

显示：set memory ignored.

Memory no longer needs to be set in modern Statas; memory adjustments are performed on the fly

  automatically.

又修改为set max_memory 50m, perm

显示：no; dataset in memory has changed since last saved

再改 set max_memory 32g

显示：no; dataset in memory has changed since last saved

r(4);

在ifplot这一步卡了2天了，实在不知道该如何解决这个问题，请各位大佬救救孩子吧。