Hi All,

i am runing case 3D using 32 modes and using new version of Nektar++4.4.1

and after 2 sec in 3D solution i had this error 

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CG iterations made = 5001 using tolerance of 1e-09 (error = nan, rhs_mag = inf)

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and the simulation has been ended 

any one have idea what i can do to solve it

wish you great day

Reda