I have been trying to package my project for windows and html5 versions, but I have constantly received that information when the packaging failed.
I already migrate one of my levels to another new project just for testing and it showed me the same results.
Is there any posibility of changing the “file name” to make it shorter or what can I do fix this?
Thanks a lot to everyone, I hope someone cand help me 
For me, in 4.22 and 4.23, the Epic Launcher picks the default “documents” folder for the user. In this case “C:\Users\michael\Documents\Unreal Projects\MyProject”
I was getting these “too long” messages and moved the project in File Explorer.to a 2nd drive:
“d:\Unreal Projects\MyProject” or why not “c:\MyProject”
The other option is to use fewer folders in your project. I picked a framework with alot of organization, and always generates these messages. The Cooker seems to be using the “C:\users…” filename instead of the “D:” one for the project when testing the filename.