504 Gateway Time-out during POST

[David]

Also getting a lot of these:

Sep 07 17:16:00.585206 [WARNING] fpm_children_bury(), line 229: child 27767
(pool default) exited on signal 15 SIGTERM after 4734.359086 seconds
Sep 07 17:16:00.585350 [WARNING] fpm_children_bury(), line 229: child 27770
(pool default) exited on signal 15 SIGTERM after 4734.355287 seconds
Sep 07 17:16:00.585452 [WARNING] fpm_children_bury(), line 229: child 27772
(pool default) exited on signal 15 SIGTERM after 4734.352343 seconds