HI,
I installed a package of RTD4.0.0

But I did not find the Fls module when I selected the module in EB

There is also no folder for Fls under the RTD4.0.0 installation path

What I want to know is that the RTD4.0.0 package itself does not support Fls module?
What do I need to do if I want to use the Fls module in this package of RTD4.0.0?
(The reason I use the package RTD4.0.0 is that it supports the FS26 module)