It says saving world then closes then says how owo mod is a incapability mod, and I have the correct version. Please help

Without a log file, it is currently impossible to figure out the cause of the issue you are currently having.

how do i get a log file?

One of the many ways to get a crash report.

1. Press Windows + R
2. Type in "%APPDATA%/.minecraft/crash-reports"
3. Search the latest file by sorting to Last Modified
4. Copy its content
5. Paste it into a pasting website like pastebin.com or mclo.gs
6. Send here the generated link

And hopefully they can help you.
For regular logs, not crash-reports, type in "%APPDATA%/.minecraft/logs" instead.

Without a log, we cannot assist with the problem. If you manage to send one, please reopen the issue

Cheers