For a while the *Org PDF LaTeX Output* buffer has been empty for me when I export to PDF.

I am currently using: Org mode version 9.7-pre (release_9.6.4-337-geaf274 

It looks like this happens because of this code:

It seems to have been added in

It looks like the code should be modified to look like something like this:

(defun org-latex-compile (texfile &optional snippet)
  "Compile a TeX file.

TEXFILE is the name of the file being compiled.  Processing is
done through the command specified in `org-latex-pdf-process',
which see.  Output is redirected to \"*Org PDF LaTeX Output*\"
buffer.

When optional argument SNIPPET is non-nil, TEXFILE is a temporary
file used to preview a LaTeX snippet.  In this case, do not
create a log buffer and do not remove log files.

Return PDF file name or raise an error if it couldn't be
produced."
  (unless snippet (message "Processing LaTeX file %s..." texfile))
  (let* ((compiler
 (or (with-temp-buffer
(save-excursion (insert-file-contents texfile))
(and (search-forward-regexp (regexp-opt org-latex-compilers)
   (line-end-position 2)
   t)
    (progn (beginning-of-line) (looking-at-p "%"))
    (match-string 0)))
              ;; Cannot find the compiler inserted by
              ;; `org-latex-template' -> `org-latex--insert-compiler'.
              ;; Use a fallback.
              org-latex-compiler))
(process (if (functionp org-latex-pdf-process) org-latex-pdf-process
   ;; Replace "%latex" with "%L" and "%bib" and
   ;; "%bibtex" with "%B" to adhere to `format-spec'
   ;; specifications.
   (mapcar (lambda (command)
     (replace-regexp-in-string
                               "%\\(?:\\(?:bib\\|la\\)tex\\|bib\\)\\>"
      (lambda (m) (upcase (substring m 0 2)))
      command))
   org-latex-pdf-process)))
         (spec `((?B . ,(shell-quote-argument org-latex-bib-compiler))
                 (?L . ,(shell-quote-argument compiler))))
(log-buf-name "*Org PDF LaTeX Output*")
         (log-buf (and (not snippet) (get-buffer-create log-buf-name)))
         (outfile))
    (with-current-buffer log-buf
      (erase-buffer))
    (setq outfile (org-compile-file texfile process "pdf"
   (format "See %S for details" log-buf-name)
   log-buf spec))
    (org-latex-compile--postprocess outfile log-buf snippet)
    ;; Return output file name.
    outfile))

WDYT?