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No dev server is running on port 8080 and no static files were found in /workspace.
How to fix
Dev server log /tmp/dev-server.log
INFO:     172.24.0.1:0 - "GET /root/.ssh/id_ed25519?_=g98vzoz2&v=uchdt HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:49782 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:64709 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:24825 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:59279 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/ubuntu/.ssh/id_rsa?_=rea042em&v=1ch10 HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:21633 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:63881 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/ubuntu/.ssh/id_ed25519?_=glw0rtcd&v=ukuy7 HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/deploy/.ssh/id_rsa?_=6wdnw3kk&v=lqzqe HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:54492 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/ec2-user/.ssh/id_rsa?_=x1zzt97f&v=rdeea HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:47347 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/www-data/.ssh/id_rsa?_=fisxx77o&v=hzrw7 HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:51035 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/git/.ssh/id_rsa?_=3of0jqvg&v=un8jb HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:41123 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /home/admin/.ssh/id_rsa?_=9ytonutq&v=pyq6v HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /etc/passwd?_=ofum4ai1&v=uwb0n HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /etc/shadow?_=988e1a9h&v=971tf HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /etc/hosts?_=igch2549&v=dq0zs HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /proc/self/environ?_=owfva28l&v=1kqja HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:62443 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:32610 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:17999 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:42214 - "GET /api/v1/health HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /proc/version?_=6fzp5k3m&v=2gqe5 HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /.aws/credentials?_=29beo6r8&v=w9m1z HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /robots.txt HTTP/1.1" 404 Not Found
INFO:     172.24.0.1:0 - "GET /sitemap.xml HTTP/1.1" 404 Not Found