Error(s) in re-building vignettes:
  ...
--- re-building ‘candlestick.Rmd’ using rmarkdown

Quitting from candlestick.Rmd:28-137 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `loadNamespace()`:
! there is no package called 'plotly'
---
Backtrace:
    ▆
 1. └─base::loadNamespace(x)
 2.   └─base::withRestarts(stop(cond), retry_loadNamespace = function() NULL)
 3.     └─base (local) withOneRestart(expr, restarts[[1L]])
 4.       └─base (local) doWithOneRestart(return(expr), restart)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'candlestick.Rmd' failed with diagnostics:
there is no package called 'plotly'
--- failed re-building ‘candlestick.Rmd’

--- re-building ‘charting.Rmd’ using rmarkdown

Quitting from charting.Rmd:27-31 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Package 'plotly' is required for the plotly backend. Install it with install.packages('plotly'), or set options(talib.chart.backend = 'ggplot2') to use the ggplot2 backend instead.
---
Backtrace:
    ▆
 1. ├─talib::chart(x = talib::NVDA)
 2. └─talib:::chart.default(x = talib::NVDA)
 3.   └─talib:::assert_plotly_pkg()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'charting.Rmd' failed with diagnostics:
Package 'plotly' is required for the plotly backend. Install it with install.packages('plotly'), or set options(talib.chart.backend = 'ggplot2') to use the ggplot2 backend instead.
--- failed re-building ‘charting.Rmd’

--- re-building ‘talib.Rmd’ using rmarkdown

Quitting from talib.Rmd:259-273 [chart(basic)]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Package 'plotly' is required for the plotly backend. Install it with install.packages('plotly'), or set options(talib.chart.backend = 'ggplot2') to use the ggplot2 backend instead.
---
Backtrace:
    ▆
 1. ├─talib::chart(talib::BTC)
 2. └─talib:::chart.default(talib::BTC)
 3.   └─talib:::assert_plotly_pkg()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'talib.Rmd' failed with diagnostics:
Package 'plotly' is required for the plotly backend. Install it with install.packages('plotly'), or set options(talib.chart.backend = 'ggplot2') to use the ggplot2 backend instead.
--- failed re-building ‘talib.Rmd’

SUMMARY: processing the following files failed:
  ‘candlestick.Rmd’ ‘charting.Rmd’ ‘talib.Rmd’

Error: Vignette re-building failed.
Execution halted