Error in job s1: Anisotropic material properties without a local orientation system have been defined for 8000 elements. Anisotropic material properties must be defined in a local orientation system. The elements are identified in element set ErrElemAnisotropicMaterial.

提交之后顯示了這個，在之前設置材料屬性的時候設置的各項同性，但這里為什么提出了各項異性？還有應該如何解決？

謝謝