用stata做GMM时出现以下错误,急求高手帮忙解决,万分感谢
xtabond B L(0/1).(M R),lags(2) vce(robust) I(): 3900 unable to allocate real <tmp>[11124,11124] _xtdpd_mkh1(): - function returned error _xtdpd_level_mka1(): - function returned error _xtdpd_dowork(): - function returned error <istmt>: - function returned errorr(3900);