Error(s) in re-building vignettes:
--- re-building 'TQ00-introduction-to-tidyquant.Rmd' using rmarkdown
[WARNING] Could not fetch resource http://img.youtube.com/vi/woxJZTL2hok/0.jpg: HttpExceptionRequest Request {
    host                 = "img.youtube.com"
    port                 = 80
    secure               = False
    requestHeaders       = []
    path                 = "/vi/woxJZTL2hok/0.jpg"
    queryString          = ""
    method               = "GET"
    proxy                = Nothing
    rawBody              = False
    redirectCount        = 10
    responseTimeout      = ResponseTimeoutDefault
    requestVersion       = HTTP/1.1
    proxySecureMode      = ProxySecureWithConnect
  }
   (ConnectionFailure user error (Network.Socket.gai_strerror not supported: 11001))
--- finished re-building 'TQ00-introduction-to-tidyquant.Rmd'

--- re-building 'TQ01-core-functions-in-tidyquant.Rmd' using rmarkdown

Quitting from lines 327-333 [unnamed-chunk-23] (TQ01-core-functions-in-tidyquant.Rmd)
Error: processing vignette 'TQ01-core-functions-in-tidyquant.Rmd' failed with diagnostics:
data must be a tibble or data.frame object
--- failed re-building 'TQ01-core-functions-in-tidyquant.Rmd'

--- re-building 'TQ02-quant-integrations-in-tidyquant.Rmd' using rmarkdown

Quitting from lines 307-322 [unnamed-chunk-17] (TQ02-quant-integrations-in-tidyquant.Rmd)
Error: processing vignette 'TQ02-quant-integrations-in-tidyquant.Rmd' failed with diagnostics:
data must be a tibble or data.frame object
--- failed re-building 'TQ02-quant-integrations-in-tidyquant.Rmd'

--- re-building 'TQ03-scaling-and-modeling-with-tidyquant.Rmd' using rmarkdown

Quitting from lines 106-109 [unnamed-chunk-8] (TQ03-scaling-and-modeling-with-tidyquant.Rmd)
Error: processing vignette 'TQ03-scaling-and-modeling-with-tidyquant.Rmd' failed with diagnostics:
subscript out of bounds
--- failed re-building 'TQ03-scaling-and-modeling-with-tidyquant.Rmd'

--- re-building 'TQ04-charting-with-tidyquant.Rmd' using rmarkdown

Quitting from lines 69-77 [unnamed-chunk-5] (TQ04-charting-with-tidyquant.Rmd)
Error: processing vignette 'TQ04-charting-with-tidyquant.Rmd' failed with diagnostics:
no applicable method for 'summarise' applied to an object of class "logical"
--- failed re-building 'TQ04-charting-with-tidyquant.Rmd'

--- re-building 'TQ05-performance-analysis-with-tidyquant.Rmd' using rmarkdown

Quitting from lines 85-94 [unnamed-chunk-4] (TQ05-performance-analysis-with-tidyquant.Rmd)
Error: processing vignette 'TQ05-performance-analysis-with-tidyquant.Rmd' failed with diagnostics:
data must be a tibble or data.frame object
--- failed re-building 'TQ05-performance-analysis-with-tidyquant.Rmd'

--- re-building 'TQ06-excel-in-r.Rmd' using rmarkdown
--- finished re-building 'TQ06-excel-in-r.Rmd'

SUMMARY: processing the following files failed:
  'TQ01-core-functions-in-tidyquant.Rmd'
  'TQ02-quant-integrations-in-tidyquant.Rmd'
  'TQ03-scaling-and-modeling-with-tidyquant.Rmd'
  'TQ04-charting-with-tidyquant.Rmd'
  'TQ05-performance-analysis-with-tidyquant.Rmd'

Error: Vignette re-building failed.
Execution halted