Urgent dSpace Rescue Needed!

I'm seeking a skilled freelancer proficient in dSpace and Linux troubleshooting. My site is currently inaccessible to users, displaying "HTTP Status 404 - Not Found" errors across the entire platform.

I'm looking for an expert who can quickly diagnose and resolve the problem to restore full functionality to my dSpace site that was installed in Linux Ubuntu 18

What I need:
- Thorough diagnostic of the dSpace environment
- Identification of the root cause for the site-wide errors
- Efficient resolution of the issues to restore full site functionality

Skills Required:
- Expertise in dSpace application management
- Proficient in Linux environments, specifically Ubuntu 18
- Strong background in web server configuration and troubleshooting
- Ability to quickly identify and rectify site errors and crashes

Experience:
- Proven track record with dSpace fixes and Linux system administration
- Previous successful projects in error resolution and site recovery

Ideal Outcome:
- Immediate restoration of site access
- Explanation of the issues and measures taken to prevent future occurrences

Please provide a bid with an estimated timeline for resolution and any similar projects you've handled. I'm looking for someone who can start immediately and provide a quick turnaround.

Thank you for considering this urgent project.