One way of treating heterogeneous impact of staggered laws is to use did_multiplegt method developed by Clément de Chaisemartin.
When running the code suggested, I have the result as below, I do not understand how to read the result because there is no p-value or -t-value, so on and so forth
The code is
did_multiplegt Y TYPE2 yr pt, robust_dynamic dynamic(5) placebo(5) breps(100) cluster(TYPE2) controls($independentvars)
The result is