Odin3 is a tool for flashing firmware and files to Samsung devices. Its a pretty easy tool to use but you're bound to encounter one error or the other at certain points in your flashing experience.
This guide is dedicated to listing errors / problems you might encounter when using Odin3, what they mean / indicate and what steps you can take to fix / resolve them.
Just in case you don't know how to use Odin3 to flash Samsung devices , please see the video below to get a good insight into how the tool works in order to boost your chances of success.
List of Odin3 errors & their solutions
FAIL! Auth
Message: custom binary (vbmeta) blocked by oem lock
Meaning You're trying to flash an unofficial firmware on a locked bootloader Solution
Ensure to unlock the bootloader or flash an official binary instead
Stuck at file analysis
Message: file analysis
Meaning You're trying to flash an improperly created tar or tar.md5 Solution
Ensure that the file / binary your trying to flash was properly created (7zip generated tars might give this error)