FortesReport 3.24 and FortesReport CE are two report packages for the same means: reporting.
Either you install package FortesReport 3.24 or you install FortesReport CE but not both.
I suggest you look in Lazarus in the list of installed packages for FortesReport 3.24 and uninstall this one.
After that install FortesReport CE (which can easily be installed via the Online Package Manager in Lazarus).