hypermesh拓扑优化求助error312

*** ERROR # 312 *** In static load case 1 the compliance is negative or large 4.82558e+013. Optimization/buckling analysis cannot be performed. due to possible rigid body mode. FEASIBLE DESIGN (ALL CONSTRAINTS SATISFIED). *** SOME ERRORS WERE REPORTED DURING THE RUN, *** PLEASE VERIFY RESULTS AS THEY MAY BE INVALID. 拓扑优化出现了这样的错误，具体是什么原因呢，有什么解决办法呢，有大神可以帮帮忙么，拜托了🙏🏻万分感谢