我将我的闪亮应用程序部署到Shinyapps.io，所有我的应用程序文件（app.r，www）都存储在我的保管箱中。我已经加载了rsconnect命令，然后将该应用发布到了我的帐户。部署过程成功，但是当我转到应用程序URL时，出现以下错误：
An error has occurred
The application failed to start (exited with code 1).
Attaching package: ‘DT’
The following objects are masked from ‘package:shiny’:
dataTableOutput, renderDataTable
Attaching package: ‘shinydashboard’
The following object is masked from ‘package:graphics’:
box
Loading required package: sp
rgdal: version: 1.3-4, (SVN revision 766)
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 2.1.3, released 2017/20/01
Path to GDAL shared files: /usr/share/gdal/2.1
GDAL binary built with GEOS: TRUE
Loaded PROJ.4 runtime: Rel. 4.9.2, 08 September 2015, [PJ_VERSION: 492]
Path to PROJ.4 shared files: (autodetected)
Linking to sp version: 1.3-1
Attaching package: ‘dplyr’
The following objects are masked from ‘package:stats’:
filter, lag
The following objects are masked from ‘package:base’:
intersect, setdiff, setequal, union
Attaching package: ‘raster’
The following object is masked from ‘package:dplyr’:
select
Error in value[[3L]](cond) : Cannot open data source
Calls: local ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted