Talking about what i see on the screenshot, it seems you need to install the legacyui module to be able to access the admin interface.
I will advice you do that.
The openmrs-core repo has the OpenMRS platform which is a mostly headless platform, meaning it does not have a useful UI. You need to add modules to your install to make the application work.
To help troubleshoot that issue, you likely need to supply the OpenMRS log output.
The rest of the messages here seem unrelated to running openmrs-core, as they are about the O3 frontend.
Could you please describe what you are trying to accomplish?