Which version of the application are you using?:
Please choose how you got the application: Installer (Windows, Linux, macOS), cloud image (AWS, GCE, Azure, ...) or VM (VMDK, VBOX):
Have you installed any plugin or modified any configuration file?:
Describe here your question/suggestion/issue (expected and actual results):
It is necessary to update the source code to the latest one, because the images within website builder are not loaded in this version.
Odoo provides an error within the Image uploader:
"local variable 'res_id' referenced before assignment"
Meanwhile Odoo community says that this has been fixed already.
So the update to the latest version should work.