500 Internal Server Error

[R. Deepan VISTAS]

I am experiencing a sudden 500 Internal Server Error on my DSpace 8 installation. Everything was working fine until yesterday, but today I encountered this issue when trying to access the system.

I have installed DSpace 8 following standard instructions and all steps in the blog comments worked correctly. However, this error appeared without any changes on my part.

Could you please advise on the possible causes and how to resolve this issue? Any guidance on checking logs, permissions, or configuration would be greatly appreciated.