*** 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. 拓撲優化出現了這樣的錯誤，具體是什么原因呢，有什么解決辦法呢，有大神可以幫幫忙么，拜托了????萬分感謝