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I noticed an error in the file https://github.com/jtr13/cc21/blob/main/common_r_errors.Rmd where a single hashtag is present for title "Tips for Debugging". This is creating https://jtr13.github.io/cc21/tips-for-debugging.html which is not needed and its contents should belong to the previous chapter.

https://github.com/jtr13/cc21/runs/2241670443

This Rmd file has been merged successfully and can be shown on the rendered page:
Already merged Rmd file

But I think the contributor submitted two more pull requests and changed the link inside Rmd file:
#84
#86

As a result, the original link in the rendered page could not work anymore and the only difference between two new requests is that one link is pointing to his own repo and the other to a google doc file. Shall we copy-paste one of the two links into merged Rmd file and just close these two new requests?

Run Rscript -e 'bookdown::render_book("index.Rmd", quiet = TRUE)'
Error in yaml::yaml.load(..., eval.expr = TRUE) : 
  Parser error: while parsing a flow sequence at line 12, column 12 did not find expected ',' or ']' at line 34, column 3
Calls: <Anonymous> ... <Anonymous> -> resolve -> <Anonymous> -> yaml_load -> <Anonymous>
Execution halted
Error: Process completed with exit code 1.

https://github.com/jtr13/cc21/actions/runs/686390967

And this one has the same issue, just with a different line number.
https://github.com/jtr13/cc21/actions/runs/686730643

https://github.com/jtr13/cc21/runs/2194546921

Run Rscript -e 'bookdown::render_book("index.Rmd", quiet = TRUE)'
Quitting from lines 15-17 (time_series_intro.Rmd) 
Error: Error in library(TSA) : there is no package called 'TSA'
Calls: local ... withCallingHandlers -> withVisible -> eval -> eval -> library
Execution halted
Error in Rscript_render(f, render_args, render_meta, add1, add2) : 
  Failed to compile time_series_intro.Rmd
Calls: <Anonymous> -> render_new_session -> Rscript_render
Execution halted
Error: Process completed with exit code 1.

This is the error message from the remaining issue.

There's another problem with dependencies. Github is having an issue installing rJava during the build operation.

https://github.com/jtr13/cc21/runs/2197491549

I've been investigating but could not figure out a solution yet.

The problem started here: https://github.com/jtr13/cc21/runs/2197303342

qdap package was not in the DESCRIPTION file even though I tried to resolve it by adding qdap to the DESCRIPTION file. rJava seems to be one of the dependencies required by the packages that qdap depends on.

This is the project that needs qdap
#36

I see all the code chunks were set to eval = FALSE in this chapter: https://jtr13.github.io/cc21/common-errors-in-r.html. Not a top priority but it would be better if we could get it to work without that. The chunk option error = TRUE should allow the document to render with the errors showing, which is the intention here since the chapter is about errors. I'm not sure why that's not working since they have it set globally in this chunk:

```{r, include=FALSE}
knitr::opts_chunk$set(echo = TRUE, error = TRUE)
```

In short, at some point let's look into this.