hi ,
Reading your log file
Find (Control+f) Solaris
LogVerseInterop: Display: GetAllVniPackages: Ignoring VNI package FriedRiceNative/FriedRiceNativeRuntime since the containing plugin FriedRiceNative is not mounted.
LogVerseInterop: Display: GetAllVniPackages: Ignoring VNI package FN1Native/FN1NativeRuntime since the containing plugin FN1Native is not mounted.
LogSolaris: The plugin: AnimNext is not valid even though its descriptor is specified as a dependency of Verse Fortnite; it will be skipped!
LogSolaris: The plugin: AnimNextAnimGraph is not valid even though its descriptor is specified as a dependency of Verse Fortnite; it will be skipped!
LogSolaris: FSolarisModule::GatherAllVersePackages() took 12.7 ms
Dont know if this a Fortnite problem or you have you have an asset problem
On the Launch dropdown is Project Validation and this run the Project Validate , probably try this before you attempt to push