Below is what I see in /var/log/ondemand-nginx/mknox/error.log after trying to use the file editor a couple times.
[{EPOLLIN, {u32=1146325872, u64=94194074094448}}], 512, -1) = 1
accept4(6, {sa_family=AF_LOCAL, NULL}, [2], SOCK_NONBLOCK) = 3
epoll_ctl(9, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLRDHUP|EPOLLET, {u32=1146326801, u64=94194074095377}}) = 0
epoll_wait(9, [{EPOLLIN, {u32=1146326801, u64=94194074095377}}], 512, 60000) = 1
recvfrom(3, āGET /pun/sys/file-editor/edit/hoāā¦, 1024, 0, NULL, NULL) = 1024
recvfrom(3, āX-Forwarded-For: 10.2.163.159\r\nXāā¦, 8192, 0, NULL, NULL) = 118
stat("/var/www/ood/apps/sys/file-editor/public/edit/home/mknox/afilefromood", 0x55ab4446b410) = -1 ENOENT (No such file or directory)
stat("/var/www/ood/apps/sys/file-editor/public/edit/home/mknox/afilefromood.html", 0x55ab4458b5c0) = -1 ENOENT (No such file or directory)
stat("/var/www/ood/apps/sys/file-editor/passenger_wsgi.py", 0x55ab4446bda0) = -1 ENOENT (No such file or directory)
stat("/var/www/ood/apps/sys/file-editor/config.ru", {st_mode=S_IFREG|0644, st_size=154, ā¦}) = 0
epoll_ctl(9, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, {u32=1146326801, u64=94194074095377}}) = 0
socket(AF_LOCAL, SOCK_STREAM, 0) = 8
ioctl(8, FIONBIO, [1]) = 0
epoll_ctl(9, EPOLL_CTL_ADD, 8, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, {u32=1146327033, u64=94194074095609}}) = 0
connect(8, {sa_family=AF_LOCAL, sun_path="/tmp/passenger.n4Nt4os/agents.s/core"}, 110) = 0
getsockopt(8, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
writev(8, [{āGET /pun/sys/file-editor/edit/hoāā¦, 2365}], 1) = 2365
epoll_wait(9, [{EPOLLOUT, {u32=1146326801, u64=94194074095377}}, {EPOLLOUT, {u32=1146327033, u64=94194074095609}}], 512, 12000000) = 2
epoll_wait(9, [{EPOLLOUT, {u32=1146327033, u64=94194074095609}}], 512, 12000000) = 1
epoll_wait(9, [{EPOLLIN|EPOLLOUT, {u32=1146327033, u64=94194074095609}}], 512, 12000000) = 1
recvfrom(8, āHTTP/1.1 404 Not Found\r\nStatus: āā¦, 16384, 0, NULL, NULL) = 15601
writev(3, [{āHTTP/1.1 404 Not Found\r\nContent-āā¦, 807}, {ā3a16\r\nā, 6}, {ā\n\n\n āā¦, 14870}, {ā\r\nā, 2}], 4) = 15685
epoll_wait(9, [{EPOLLIN|EPOLLOUT|EPOLLHUP|EPOLLRDHUP, {u32=1146327033, u64=94194074095609}}], 512, 11999996) = 1
recvfrom(8, āā, 16384, 0, NULL, NULL) = 0
close(8) = 0
writev(3, [{ā0\r\n\r\nā, 5}], 1) = 5
write(5, āunix: - mknox [25/Apr/2019:05:02āā¦, 308) = 308
close(3) = 0
epoll_wait(9,