为什么用stata15做脉冲响应时总是会出现

alignstroke.new,: class member function not found
(error occurred while loading linestyle.class)
linestyle.new: class member function not found
(error occurred while loading areastyle.class)
areastyle.new: class member function not found
(error occurred while loading plotregionstyle.class)
plotregionstyle.new: class member function not found
(error occurred while loading bygraphstyle.class)
bygraphstyle: class type not found
(error occurred while loading bygraph_g.class)
bygraph_g.new: class member function not found
r(4023);
命令：irf create irf1,step(10) set(myirf1,replace)
irf graph oirf, impulse( dmfixassetinvestyoyp )  response( slf )