Deploying Shiny apps to the web (error)

hello,

After a few minutes of launching the publication of my app.R on shinyapps.io, an error appears :

 ################################# End Task Log ################################# 
Erreur : Unhandled Exception: Child Task 878382719 failed: Error building image: Error building nloptr (1.2.2.2). Build exited with non-zero status: 1
De plus : Warning message:
Error detecting locale: Error in read.table(file = file, header = header, sep = sep, quote = quote, : incomplete final line found by readTableHeader on 'raw'
 (Using default: en_US) 

I have difficulty understanding where this error comes from. Do you have any ideas?

thank you