Hello Mary
While Boost looks like this with endless spinning wheels
the Apache and PHP log doesn't contain any errors:
vim /var/log/apache2/error.log
[ 2017-07-20 06:25:32.3580 8251/7fb429dd0780 age/Wat/WatchdogMain.cpp:1301 ]: Starting Passenger watchdog...
[ 2017-07-20 06:25:32.3693 8254/7f1ed08fc780 age/Cor/CoreMain.cpp:982 ]: Starting Passenger core...
[ 2017-07-20 06:25:32.3694 8254/7f1ed08fc780 age/Cor/CoreMain.cpp:235 ]: Passenger core running in multi-application mode.
[ 2017-07-20 06:25:32.3709 8254/7f1ed08fc780 age/Cor/CoreMain.cpp:732 ]: Passenger core online, PID 8254
[ 2017-07-20 06:25:32.3813 8265/7f604c8d7780 age/Ust/UstRouterMain.cpp:529 ]: Starting Passenger UstRouter...
[ 2017-07-20 06:25:32.3818 8265/7f604c8d7780 age/Ust/UstRouterMain.cpp:342 ]: Passenger UstRouter online, PID 8265
[Thu Jul 20 06:25:32.408673 2017] [mpm_prefork:notice] [pid 1094] AH00163: Apache/2.4.18 (Ubuntu) SVN/1.9.3 Phusion_Passenger/5.0.27 OpenSSL/1.0.2g mod_perl/2.0.9 Perl/v5.22.1 configured -- resuming normal operations
[Thu Jul 20 06:25:32.408692 2017] [core:notice] [pid 1094] AH00094: Command line: '/usr/sbin/apache2'
We're experiencing the same problem on a Debian Linux as well.
Frank