Optimization result

[ZhunyunTang]

Hello,
I encountered the following problem when fitting the ace potential using pacemaker (both the Cu-I example in the pyace package and the AlLi case in pace-tutorial-main). The fitting task was always interrupted and did not reach the set maximum number of iteration steps. The log file indicates that Optimization result(success=False, status=2, message=Desired error not necessarily achieved due to precision loss., nfev=909, njev= 897).

I'm not sure if this is normal or not and would appreciate some advice from you.

Best regards,
Zhunyun