Today I tried downloading 1.16.5 forge (the recommended version) and when installing I selected "download client". At the end just before appeared "These libraries failed to download. Try again." and at the bottom there were "org.apache.logging.log4j:log4j-api:2.15.0 ; org.apache.logging.log4j:log4j-core:2.15.0 and org.apache.logging.log4j:log4j-slf4j18-impl2.15.0" I tried the newest version and the same thing appeared