I have a owncloud server through digitalocean. It was a 9.0.2 or 3. Can't remember but recently I have been getting internal server error. I have looked in log files but couldn't find anything pointing me in the right direction. Can someone help me find a cure to this. Thanks.
an internal server error is just a generic error with could have tons of different reasons. Without the matching logfile to that internal server error its not possible to help here.
As 9.0.2 / 9.0.3 is also quite outdated, please update to a recent version ASAP.
Could you tell me where and what log file to look at? Also what would be involved in a upgrade? 9.0.2 is what digitalocean has as a one click. Was trying to get a owncloud to get file back and forth to work cheap. Thanks.
There is a FAQ available at  for this topic.
Then you should urgently contact digitalocean about this issue. ownCloud 9.0.2 contains various known and public available security vulnerabilities (https://owncloud.org/security/advisories/). Not talking about various bugs fixed in newer versions.
This is nothing what you should run on a system available / reachable from the internet.