There are a plethora of errors that can come up and not every error has a unique root cause. Some are masked by other errors or problems, some are expected.
If you'd like to discuss getting some extra help on your specific situation or for more information on other services that I offer, feel free to contact me. While I attempt to put in as much knowledge and information into each error, some of these have non-trivial root causes or troubleshooting steps and an extra helping hand is needed.