Error(s) in re-building vignettes:
--- re-building ‘help.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/utf8_1.2.1.tgz'
Content type 'application/x-gzip' length 210748 bytes (205 KB)
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downloaded 205 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/pillar_1.6.0.tgz'
Content type 'application/x-gzip' length 1008170 bytes (984 KB)
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downloaded 984 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/pkgconfig_2.0.3.tgz'
Content type 'application/x-gzip' length 17782 bytes (17 KB)
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downloaded 17 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/vctrs_0.3.8.tgz'
Content type 'application/x-gzip' length 1449761 bytes (1.4 MB)
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downloaded 1.4 MB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/glue_1.4.2.tgz'
Content type 'application/x-gzip' length 141468 bytes (138 KB)
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downloaded 138 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/rprojroot_2.0.2.tgz'
Content type 'application/x-gzip' length 96339 bytes (94 KB)
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downloaded 94 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/rstudioapi_0.13.tgz'
Content type 'application/x-gzip' length 274313 bytes (267 KB)
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downloaded 267 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/diffobj_0.3.4.tgz'
Content type 'application/x-gzip' length 1004485 bytes (980 KB)
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downloaded 980 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/fansi_0.4.2.tgz'
Content type 'application/x-gzip' length 225364 bytes (220 KB)
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downloaded 220 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/rematch2_2.1.2.tgz'
Content type 'application/x-gzip' length 44796 bytes (43 KB)
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downloaded 43 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/tibble_3.1.1.tgz'
Content type 'application/x-gzip' length 809872 bytes (790 KB)
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downloaded 790 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/brio_1.1.2.tgz'
Content type 'application/x-gzip' length 41018 bytes (40 KB)
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downloaded 40 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/callr_3.7.0.tgz'
Content type 'application/x-gzip' length 437525 bytes (427 KB)
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downloaded 427 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/cli_2.5.0.tgz'
Content type 'application/x-gzip' length 528485 bytes (516 KB)
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downloaded 516 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/crayon_1.4.1.tgz'
Content type 'application/x-gzip' length 140330 bytes (137 KB)
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downloaded 137 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/desc_1.3.0.tgz'
Content type 'application/x-gzip' length 527980 bytes (515 KB)
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downloaded 515 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/digest_0.6.27.tgz'
Content type 'application/x-gzip' length 292244 bytes (285 KB)
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downloaded 285 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/ellipsis_0.3.2.tgz'
Content type 'application/x-gzip' length 38582 bytes (37 KB)
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downloaded 37 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/evaluate_0.14.tgz'
Content type 'application/x-gzip' length 74319 bytes (72 KB)
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downloaded 72 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/jsonlite_1.7.2.tgz'
Content type 'application/x-gzip' length 509770 bytes (497 KB)
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downloaded 497 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/lifecycle_1.0.0.tgz'
Content type 'application/x-gzip' length 95980 bytes (93 KB)
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downloaded 93 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/magrittr_2.0.1.tgz'
Content type 'application/x-gzip' length 226047 bytes (220 KB)
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downloaded 220 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/pkgload_1.2.1.tgz'
Content type 'application/x-gzip' length 152343 bytes (148 KB)
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downloaded 148 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/praise_1.0.0.tgz'
Content type 'application/x-gzip' length 16076 bytes (15 KB)
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downloaded 15 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/processx_3.5.2.tgz'
Content type 'application/x-gzip' length 299051 bytes (292 KB)
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downloaded 292 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/ps_1.6.0.tgz'
Content type 'application/x-gzip' length 286443 bytes (279 KB)
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downloaded 279 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/R6_2.5.0.tgz'
Content type 'application/x-gzip' length 82491 bytes (80 KB)
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downloaded 80 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/rlang_0.4.11.tgz'
Content type 'application/x-gzip' length 1367494 bytes (1.3 MB)
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downloaded 1.3 MB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/waldo_0.2.5.tgz'
Content type 'application/x-gzip' length 69901 bytes (68 KB)
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downloaded 68 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/withr_2.4.2.tgz'
Content type 'application/x-gzip' length 209939 bytes (205 KB)
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downloaded 205 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/pls_2.7-3.tgz'
Content type 'application/x-gzip' length 1267504 bytes (1.2 MB)
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downloaded 1.2 MB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/testthat_3.0.2.tgz'
Content type 'application/x-gzip' length 2981947 bytes (2.8 MB)
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downloaded 2.8 MB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/apercu_0.2.4.tgz'
Content type 'application/x-gzip' length 26148 bytes (25 KB)
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downloaded 25 KB

* installing *source* package ‘dummyPackage’ ...
** using staged installation
** R
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* DONE (dummyPackage)
trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/apercu_0.2.4.tgz'
Content type 'application/x-gzip' length 26148 bytes (25 KB)
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downloaded 25 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/apercu_0.2.4.tgz'
Content type 'application/x-gzip' length 26148 bytes (25 KB)
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downloaded 25 KB

trying URL 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.1/apercu_0.2.4.tgz'
Content type 'application/x-gzip' length 26148 bytes (25 KB)
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downloaded 25 KB

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

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

Error: Vignette re-building failed.
Execution halted