Error In fileDependencies.R(file) in shiny

I'm new whith R Studio and Shiny.

I've load files in shiny before but now I have a problem. When I deploy the app in R Studio it's works, however when i want submit to shinyio appear a warning message:

In fileDependencies.R(file) :
Failed to parse C:/Users/.../AppData/Local/Temp/RtmpegCVU5/file12303e6d6ad4/ui.R ; dependencies in this file will not be discovered.

and in shinyio:

An error has occurred. Check your logs or contact the app author for clarification.

I work whith UTF-8 encoding, I reinstalled R and R Studio and it still don't work.

Some help, please! :pray: