Error(s) in re-building vignettes:
  ...
--- re-building ‘MultistateLH.Rmd’ using knitr
--- finished re-building ‘MultistateLH.Rmd’

--- re-building ‘Piecewise_exponential.Rmd’ using knitr
** Processing: figure/fig1-1.png
504x504 pixels, 8 bits/pixel, 192 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4118 bytes
Input file size = 4784 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3196
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3195
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 3195

Output IDAT size = 3195 bytes (923 bytes decrease)
Output file size = 3273 bytes (1511 bytes = 31.58% decrease)

** Processing: figure/unnamed-chunk-5-1.png
504x504 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 8077 bytes
Input file size = 8935 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6800
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6800

Output IDAT size = 6800 bytes (1277 bytes decrease)
Output file size = 6878 bytes (2057 bytes = 23.02% decrease)

** Processing: figure/unnamed-chunk-6-1.png
504x504 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 8182 bytes
Input file size = 9037 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6827
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6827

Output IDAT size = 6827 bytes (1355 bytes decrease)
Output file size = 6905 bytes (2132 bytes = 23.59% decrease)

** Processing: figure/2_pwc3-1.png
504x504 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 19196 bytes
Input file size = 19298 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 17497
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 17497

Output IDAT size = 17497 bytes (1699 bytes decrease)
Output file size = 17575 bytes (1723 bytes = 8.93% decrease)

** Processing: figure/unnamed-chunk-14-1.png
504x504 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 28355 bytes
Input file size = 28469 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 24071
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 24071

Output IDAT size = 24071 bytes (4284 bytes decrease)
Output file size = 24149 bytes (4320 bytes = 15.17% decrease)

** Processing: figure/2_test16-1.png
504x504 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 24666 bytes
Input file size = 24780 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20558
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20558

Output IDAT size = 20558 bytes (4108 bytes decrease)
Output file size = 20636 bytes (4144 bytes = 16.72% decrease)

--- finished re-building ‘Piecewise_exponential.Rmd’

--- re-building ‘Tutorial.Rmd’ using knitr

Quitting from lines 80-83 [unnamed-chunk-2] (Tutorial.Rmd)
Error: processing vignette 'Tutorial.Rmd' failed with diagnostics:
Timeout was reached: [www.mortality.org] SSL connection timeout
--- failed re-building ‘Tutorial.Rmd’

SUMMARY: processing the following file failed:
  ‘Tutorial.Rmd’

Error: Vignette re-building failed.
Execution halted