Error running shiny app in relation to sourcing the cloud/project/app.R

...Error in parse(file, keep.source = FALSE, srcfile = src, encoding = enc) :
/cloud/project/app.R:22:31: unexpected input
21: label = "Y-axis:",
22: choices = c(_
^
Error in sourceUTF8(fullpath, envir = new.env(parent = sharedEnv)) :
Error sourcing /cloud/project/app.R

You appear to have a syntax error in the app.R file, around line 22.

Thanks prubin for feedback