<p>The issue is with the navbar page, downgrading shiny to 1.6 or in my case 1.4 fixed it for me, the detailed link to find to the solution is here: <a href="https://github.com/rstudio/shiny/issues/3556" rel="nofollow noreferrer">https://github.com/rstudio/shiny/issues/3556</a></p>
<p>Cheers.</p>

CC BY-SA 4.0
2022-02-03T18:17:37.833Z
2022-02-03T18:17:37.833Z
adeizadavid
<p>When I execute:</p>
<p><code>&gt; FastqCleaner:::launch_fqc()()</code></p>
<p>I get the following output</p>
<pre><code>Listening on http://127.0.0.1:4863
Warning: Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
Warning: Error in : Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
  85: stop
  84: FUN
  83: lapply
  82: buildTabset
  81: tabsetPanel_
  80: func
  78: tabsetPanel
Warning: Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
Warning: Error in : Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
  85: stop
  84: FUN
  83: lapply
  82: buildTabset
  81: tabsetPanel_
  80: func
  78: tabsetPanel
</code></pre>
<p>Have I done something wrong or is the function broken in some way?</p>

<r><bioconductor><fastq><fastqc><rstudio>
fastqCleaner failing to launch in RStudio
# fastqCleaner failing to launch in RStudio

(Asked by: username_0 on 2021-10-26)

When I execute:
> FastqCleaner:::launch_fqc()()
I get the following output
Listening on http://127.0.0.1:4863
Warning: Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
Warning: Error in : Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
  85: stop
  84: FUN
  83: lapply
  82: buildTabset
  81: tabsetPanel_
  80: func
  78: tabsetPanel
Warning: Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
Warning: Error in : Navigation containers expect a collection of `bslib::nav()`/`shiny::tabPanel()`s and/or `bslib::nav_menu()`/`shiny::navbarMenu()`s. Consider using `header` or `footer` if you wish to place content above (or below) every panel's contents.
  85: stop
  84: FUN
  83: lapply
  82: buildTabset
  81: tabsetPanel_
  80: func
  78: tabsetPanel

Have I done something wrong or is the function broken in some way?

**Tags:** r, bioconductor, fastq, fastqc, rstudio

---

## 1 answers

### Answer by username_1 on 2022-02-03. Score: 2

The issue is with the navbar page, downgrading shiny to 1.6 or in my case 1.4 fixed it for me, the detailed link to find to the solution is here: <https://github.com/rstudio/shiny/issues/3556>

Cheers.


---

