用LS-DYNA做地震分析，出现错误

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*** Error repeated points in load curve number= 1 point number= 2
*** Error load curve 1 has vertical slope
Check that this curve is correct
*** Error repeated points in load curve number= 2 point number= 2
*** Error load curve 2 has vertical slope
Check that this curve is correct
Memory required for explicit solution : 401081
Additional dynamically allocated memory: 10128
Total: 411209
我是在外荷载作用下，加地震波求解是出现的