A fatal error has been detected during input processing:
*** ERROR # 3840 ***
The eigenvalue solution for solving CMS modes has failed to obtain
the desired modes.
dimension of eigen problem = 24
obtained number of modes = 0
The failure is likely to be caused by misplaced interface nodes or
ill-conditioned eigen problem. Please check the model and rerun
the problem. If you cannot resolve this error, please send the input
model to ossupport for debugging.
这个怎么处理