ANSYS 2020R2 LS-DYNA student, ANSYS Powershell

I have downloaded Ansys 2020R2 LS-DYNA Student. When I click on LS-DYNA PowerShell from the Start menu, the LS-DYNA Powershell window opens. Figure 1

after typing lsdyna, it gives the following error (figure 2), and I am not sure how to fix it.

I would appreciate it if you could help.

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