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

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building ‘dams.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘dams.Rmd’ using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building ‘dams.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘dams.Rmd’ using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building ‘dams.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘dams.Rmd’ using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building ‘dams.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'dams.Rmd' using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building 'dams.Rmd'

SUMMARY: processing the following file failed:
  'dams.Rmd'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘dams.Rmd’ using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building ‘dams.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘dams.Rmd’ using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building ‘dams.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'dams.Rmd' using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building 'dams.Rmd'

SUMMARY: processing the following file failed:
  'dams.Rmd'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'dams.Rmd' using rmarkdown

Quitting from dams.Rmd:82-119 [unnamed-chunk-7]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! <ggplot2::labels> object is invalid:
- every label must be named.
---
Backtrace:
    ▆
 1. └─ggplot2::labs(...)
 2.   └─ggplot2::class_labels(args)
 3.     └─S7::new_object(labels)
 4.       └─S7::validate(object, recursive = !parent_validated)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'dams.Rmd' failed with diagnostics:
<ggplot2::labels> object is invalid:
- every label must be named.
--- failed re-building 'dams.Rmd'

SUMMARY: processing the following file failed:
  'dams.Rmd'

Error: Vignette re-building failed.
Execution halted