Normal cannot be computed in 1 elements. The nodal coordinates may be incorrect or the element aspect ratio may exceed 1000 to 1. The elements have been identified in element set ErrElemNormal.

Error in defining normal to the element surface at a node in 1 elements. The elements have been identified in element set ErrElemShellNormal.

Analysis Input File Processor exited with an error.

謝謝各位大神解答