这个错误是什么意思？？？怎么解决呢？？？

The volume of 3147 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. In the case of a tetrahedron this error may indicate that all nodes are located very nearly in a plane. The elements have been identified in element set ErrElemVolSmallNegZero.

Analysis Input File Processor exited with an error.