上传了server.R，ui.R和global.R文件后，它给了我这些消息：
“发生了错误”
“应用程序无法启动。”
这是我的Github帐户，其中包含源代码：
https://github.com/ryuth/shiny-MLBpitchFX_velocity
我有这个问题几天了，我很厌倦了。我甚至通过添加shinyapps :: showLogs（）来检查日志文件。 （我还根据我的账户添加了参数）
以下是我的日志：
2015-07-30T20:59:59.390947+00:00 shinyapps[53094]: Starting R with process ID: '12'
2015-07-30T23:14:21.628231+00:00 shinyapps[53094]: R version: 3.2.1
2015-07-30T23:14:21.628283+00:00 shinyapps[53094]: shiny version: 0.12.1
2015-07-30T23:14:21.628285+00:00 shinyapps[53094]: rmarkdown version: 0.7
2015-07-30T23:14:21.628294+00:00 shinyapps[53094]: knitr version: 1.10.5
2015-07-30T23:14:21.628295+00:00 shinyapps[53094]: jsonlite version: 0.9.16
2015-07-30T23:14:21.628342+00:00 shinyapps[53094]: htmltools version: 0.2.6
2015-07-30T23:14:21.628623+00:00 shinyapps[53094]: Using jsonlite for JSON processing
2015-07-30T23:14:21.826908+00:00 shinyapps[53094]:
2015-07-30T23:14:21.826913+00:00 shinyapps[53094]: Starting R with process ID: '12'
2015-07-30T23:14:21.628302+00:00 shinyapps[53094]: RJSONIO version: 1.3.0
2015-07-30T23:14:30.964879+00:00 shinyapps[53094]: R version: 3.2.1
2015-07-30T23:14:30.964960+00:00 shinyapps[53094]: shiny version: 0.12.1
2015-07-30T23:14:30.964961+00:00 shinyapps[53094]: rmarkdown version: 0.7
2015-07-30T23:14:30.964972+00:00 shinyapps[53094]: knitr version: 1.10.5
2015-07-30T23:14:30.964973+00:00 shinyapps[53094]: jsonlite version: 0.9.16
2015-07-30T23:14:30.964974+00:00 shinyapps[53094]: RJSONIO version: 1.3.0
2015-07-30T23:14:30.964998+00:00 shinyapps[53094]: htmltools version: 0.2.6
2015-07-30T23:14:30.965274+00:00 shinyapps[53094]: Using jsonlite for JSON processing
2015-07-30T23:14:31.161536+00:00 shinyapps[53094]:
2015-07-30T23:14:31.161541+00:00 shinyapps[53094]: Starting R with process ID: '27'
2015-07-30T23:15:13.122164+00:00 shinyapps[53094]: R version: 3.2.1
2015-07-30T23:15:13.122235+00:00 shinyapps[53094]: shiny version: 0.12.1
2015-07-30T23:15:13.122237+00:00 shinyapps[53094]: rmarkdown version: 0.7
2015-07-30T23:15:13.122246+00:00 shinyapps[53094]: knitr version: 1.10.5
2015-07-30T23:15:13.122247+00:00 shinyapps[53094]: jsonlite version: 0.9.16
2015-07-30T23:15:13.122275+00:00 shinyapps[53094]: RJSONIO version: 1.3.0
2015-07-30T23:15:13.122300+00:00 shinyapps[53094]: htmltools version: 0.2.6
2015-07-30T23:15:13.122565+00:00 shinyapps[53094]: Using jsonlite for JSON processing
2015-07-30T23:15:13.309834+00:00 shinyapps[53094]:
2015-07-30T23:15:13.309839+00:00 shinyapps[53094]: Starting R with process ID: '37'
2015-07-30T23:15:40.950061+00:00 shinyapps[53094]: R version: 3.2.1
2015-07-30T23:15:40.950116+00:00 shinyapps[53094]: shiny version: 0.12.1
2015-07-30T23:15:40.950117+00:00 shinyapps[53094]: rmarkdown version: 0.7
2015-07-30T23:15:40.950127+00:00 shinyapps[53094]: knitr version: 1.10.5
2015-07-30T23:15:40.950128+00:00 shinyapps[53094]: jsonlite version: 0.9.16
2015-07-30T23:15:40.950135+00:00 shinyapps[53094]: RJSONIO version: 1.3.0
2015-07-30T23:15:40.950178+00:00 shinyapps[53094]: htmltools version: 0.2.6
2015-07-30T23:15:40.950416+00:00 shinyapps[53094]: Using jsonlite for JSON processing
2015-07-30T23:15:41.137130+00:00 shinyapps[53094]:
2015-07-30T23:15:41.137135+00:00 shinyapps[53094]: Starting R with process ID: '47'
2015-07-30T23:23:38.345286+00:00 shinyapps[53094]: R version: 3.2.1
2015-07-30T23:23:38.345345+00:00 shinyapps[53094]: shiny version: 0.12.1
2015-07-30T23:23:38.345347+00:00 shinyapps[53094]: rmarkdown version: 0.7
2015-07-30T23:23:38.345361+00:00 shinyapps[53094]: knitr version: 1.10.5
2015-07-30T23:23:38.345362+00:00 shinyapps[53094]: jsonlite version: 0.9.16
2015-07-30T23:23:38.345363+00:00 shinyapps[53094]: RJSONIO version: 1.3.0
2015-07-30T23:23:38.345391+00:00 shinyapps[53094]: htmltools version: 0.2.6
2015-07-30T23:23:38.345655+00:00 shinyapps[53094]: Using jsonlite for JSON processing
2015-07-30T23:23:38.570733+00:00 shinyapps[53094]:
2015-07-30T23:23:38.570738+00:00 shinyapps[53094]: Starting R with process ID: '57'
我在源代码中添加了所需的所有库。什么可能是错的？