Actual behavior
pkill -f puma
bundle exec puma puma.rb
I executed the commands to restart puma using the puma.rb configuration file, but now the server itself is not working… 
what’s wrong with me?
The logs were recorded before restarting the server, but no logs are being recorded after the restart.
here’s my gem list.
actioncable (5.2.2, 5.2.1)
actionmailer (5.2.2, 5.2.1)
actionpack (5.2.2, 5.2.1)
actionview (5.2.2, 5.2.1)
activejob (5.2.2, 5.2.1)
activemodel (5.2.2, 5.2.1)
activerecord (5.2.2, 5.2.1)
activestorage (5.2.2, 5.2.1)
activesupport (5.2.2, 5.2.1)
ansi (1.5.0)
arel (9.0.0)
bigdecimal (default: 1.3.4)
bootsnap (1.3.2)
builder (3.2.3)
bundler (1.17.2)
byebug (10.0.2)
cmath (default: 1.0.0)
concurrent-ruby (1.1.4, 1.1.3)
connection_pool (2.2.2)
crass (1.0.4)
csv (default: 1.0.0)
date (default: 1.0.0)
did_you_mean (1.2.0)
erubi (1.8.0, 1.7.1)
etc (default: 1.0.0)
fcntl (default: 1.0.0)
ffi (1.9.25)
fiddle (default: 1.0.0)
fileutils (default: 1.0.2)
globalid (0.4.1)
http-2 (0.9.0)
i18n (1.2.0, 1.1.1)
io-console (default: 0.4.6)
ipaddr (default: 1.2.0)
json (default: 2.1.0)
jwt (2.1.0)
listen (3.1.5)
loofah (2.2.3)
mail (2.7.1)
marcel (0.3.3)
method_source (0.9.2)
mimemagic (0.3.2)
mini_mime (1.0.1)
mini_portile2 (2.4.0, 2.3.0)
minitest (5.11.3, 5.10.3)
msgpack (1.2.4)
multi_json (1.13.1)
mysql2 (0.5.2)
net-http-persistent (3.0.0)
net-http2 (0.18.0)
net-telnet (0.1.1)
nio4r (2.3.1)
nokogiri (1.9.1, 1.8.5)
openssl (default: 2.1.2)
power_assert (1.1.1)
psych (default: 3.0.2)
puma (3.12.0)
rack (2.0.6)
rack-test (1.1.0)
rails (5.2.2, 5.2.1)
rails-dom-testing (2.0.3)
rails-html-sanitizer (1.0.4)
railties (5.2.2, 5.2.1)
rake (12.3.2, 12.3.1, 12.3.0)
rb-fsevent (0.10.3)
rb-inotify (0.10.0, 0.9.10)
rdoc (default: 6.0.1)
rpush (3.3.1)
ruby_dep (1.5.0)
scanf (default: 1.0.0)
sdbm (default: 1.0.0)
spring (2.0.2)
spring-watcher-listen (2.0.1)
sprockets (3.7.2)
sprockets-rails (3.2.1)
sqlite3 (1.3.13)
stringio (default: 0.0.1)
strscan (default: 1.0.0)
test-unit (3.2.7)
thor (0.20.3)
thread_safe (0.3.6)
tzinfo (1.2.5)
webrick (default: 1.4.2)
websocket-driver (0.7.0)
websocket-extensions (0.1.3)
xmlrpc (0.3.0)
zlib (default: 1.0.0)