I found what is the cause. The problem is Case Sensitive in my cent os. "http://localhost/documentation/SlothCreator" requests /data/documentation/SlothCreator.json, but the file name is /data/documentation/slothcreator.json. So I added follows to the .htaccess. RewriteRule /data/documentation/SlothCreator.json /data/documentation/slothcreator.json then It works well.

CentOS: /data/documentation/SlothCreator.json HTTP/1.1" 500 527 ||| Mac: /data/documentation/SlothCreator.json HTTP/1.1" 200 12927

Appache access log: "GET /documentation/SlothCreator HTTP/1.1" 200 3789 "-" "GET /css/index.7bb6526a.css HTTP/1.1" 200 25432 "http: "GET /js/chunk-vendors.779cfe0d.js HTTP/1.1" 200 93127 "GET /js/index.2b1836ed.js HTTP/1.1" 200 20015 "http:// "GET /css/documentation-topic.9689e104.css HTTP/1.1" 200 468 "GET /css/documentation-topic~topic~tutorials-overview.83d60 "GET /css/topic.71a5a916.css HTTP/1.1" 200 58203 "http:// "GET /css/tutorials-overview.7d1da3df.css HTTP/1.1" 200 1743 "GET /js/chunk-2d0d3105.459bf725.js HTTP/1.1" 200 6923 "http "GET /js/documentation-topic.d0b0a554.js HTTP/1.1" 200 83535 "GET /js/documentation-topic~topic~tutorials-overview.e72431 "GET /js/highlight-js-bash.85a55401.js HTTP/1.1" 200 2175 "h "GET /js/highlight-js-c.99b899e6.js HTTP/1.1" 200 3991 "http "GET /js/highlight-js-cpp.46268241.js HTTP/1.1" 200 5807 "ht "GET /js/highlight-js-css.c12e29c1.js HTTP/1.1" 200 7055 "ht "GET /css/documentation-topic~topic~tutorials-overview.83d60 "GET /theme-settings.json HTTP/1.1" 200 1160 "http:// "GET /css/documentation-topic.9689e104.css HTTP/1.1" 200 468 "GET /js/documentation-topic~topic~tutorials-overview.e72431 "GET /js/documentation-topic.d0b0a554.js HTTP/1.1" 200 83535 "GET /js/highlight-js-custom-markdown.fb3d4662.js HTTP/1.1" "GET /js/highlight-js-custom-swift.b1f7a896.js HTTP/1.1" 200 "GET /js/highlight-js-diff.672514df.js HTTP/1.1" 200 841 "ht "GET /js/highlight-js-http.ec39e120.js HTTP/1.1" 200 998 "ht "GET /js/highlight-js-java.a814d7f9.js HTTP/1.1" 200 2526 "h "GET /js/highlight-js-json.471128d2.js HTTP/1.1" 200 452 "ht "GET /js/highlight-js-javascript.4d4a362d.js HTTP/1.1" 200 5 "GET /js/highlight-js-llvm.ddaa176e.js HTTP/1.1" 200 2749 "h "GET /js/highlight-js-markdown.451c845b.js HTTP/1.1" 200 212 "GET /js/highlight-js-objectivec.bcdf5156.js HTTP/1.1" 200 2 "GET /js/highlight-js-python.b6226703.js HTTP/1.1" 200 4373 "GET /js/highlight-js-php.cc8d6c27.js HTTP/1.1" 200 4153 "ht "GET /js/highlight-js-perl.b3c5d3f2.js HTTP/1.1" 200 4663 "h "GET /js/highlight-js-ruby.fb547e8d.js HTTP/1.1" 200 3597 "h "GET /js/highlight-js-scss.33a3a3f7.js HTTP/1.1" 200 7912 "h "GET /js/highlight-js-swift.0e0d0e76.js HTTP/1.1" 200 7465 " "GET /js/highlight-js-xml.784eb41b.js HTTP/1.1" 200 2236 "ht "GET /js/topic.cd2c44f5.js HTTP/1.1" 200 84134 "http:// "GET /js/tutorials-overview.db178ab9.js HTTP/1.1" 200 31964 "GET /data/documentation/SlothCreator.json HTTP/1.1" 500 527