vivado与modelsim联合仿真报错

[USF-ModelSim-48]Failed to locate 'vsim.exe' executable in the shell environment 'PATH'variable. Please source the settings script included with the installation and retry thisoperation again.
[Vivado 12-4473] Detected error while running simulation. Please correct the issue andretry this operation.

如图报错，怎么解决呀