I try to use vivado HLS run the example in the foder
IIoT-EDDP/design_hls/Clarke_Directto create a IP core.
I double click the
vivado_hls.app to open the vivado HLS project but I can't run C simulation ,because the "run C simulation button was grey ,

and then I try to creat a new project:
1.creat new project
2.add files and set top function
3.add c-based testbench files:test_clark_direct.cpp
4.run C Simulation
5.after a while a window pop up with the information:vivado HLS C simulation could not complete... there is 1 error

I must make some mistakes ,can anyone help me ?
best regards