EViews will issue an error message “Near singular matrix.” When you get this error message, you should check to see whether the regressors are exactly collinear. The regressors are exactly collinear if one regressor can be written as
a linear combination of the other regressors. Under exact collinearity, the regressor matrix does not have full column rank and the OLS estimator cannot be computed. In this case, simply drop either the constant term or one of the dummy variables.

就是你的变量中存在多重共线。

多谢版主！