Biaxial compression test-Mohr coulomb fails

[ranjeet270]

Hi,
I am trying to this Biaxial compression test from the PLAXIS module.

Here is my input file and I am getting error:
Time Step 1, time = 0.1, dt = 0.1
0 Nonlinear |R| = 8.495793e+00
0 Linear |R| = 8.495793e+00
After reducing the stepsize to 0.0078125 with original strain increment with L2norm 2.36573e-09 the returnMap algorithm failed
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Checking the derivatives
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Debug Parameters are as follows
stress =
-2.33717e-08 1.89488e-10 0
1.89488e-10 -1.37257e-08 0
0 0 -9.27434e-09