writeManifest lexical error - too long chunk

[minemR]

When creating manifest:
writeManifest(appFiles = 'test1.qmd') we got error:

Error: lexical error: invalid character inside string.
          st_test\n### test_test_test_te st_test_test_test_test_test_t
                     (right here) ------^

trying to pinpoint the issue we came to line where quarto.exe inspect is called:

rsconnect/R/appMetadata-quarto.R

Line 48 in 848b15f

quarto, c("inspect", shQuote(file.path(appDir, appPrimaryDoc))),

Trying to split the chunk, resolves the issue.
Are there any character length limitation for single quarto chunk?
The dashboard works fine when chunks are large, so the problem only comes up when we need to create a manifest file for deployment to Posit Connect.

Example dashboard code:
test1.zip

[minemR]

Looking more in depth, it seems that json parsing is at blame:

rsconnect/R/appMetadata-quarto.R

Line 63 in 848b15f

jsonlite::fromJSON(json)

From my testing, it seems that this could fix the problem:

jsonlite::fromJSON(paste(json, collapse = ''))