npm install: operation not permitted

[r-shakeri]

hello

thank you by your tutorial,but i have two problems: when i cloned it and done npm install it showed me this message for some commands: npm ERR! Error: EPERM: operation not permitted, unlink 'C:\Users\admin\Desktop\angular-8-role-based-authorization-example-master\angular-8-role-based-authorization-example-master\node_modules.staging@babel\generator-5e4670ba\LICENSE'

then: i wrote it my self and i have ssr project with angular 9, when i run the app i get this error: Can't bind to 'formGroup' since it isn't a known property of 'form'. by the way i checked all possible ways to resolve it, i added FormsModule and ReactiveFormsModule modules to both appmodule and servermodule, but unfortunately it dosen't work.

i don't know what is the problem, could you please help me?

[r-shakeri]

i solved my second problem.