Please see attached which has the following code which reproduces the issue:

#+begin_src sh :shebang #!/bin/bash :results none
for (( i=1500 ; i>0 ; i-=1 ))
do
head -c 6 /dev/urandom | uuencode -m -
done |
tee /dev/null
#+end_src

On 11/18/22 02:45, Ihor Radchenko wrote:

Daniel Ortmann <daniel.ortmann@oracle.com> writes:

I have several small sh source blocks with ':results none'. The source
is executed for effect and the last line of the source is:
... | tee /target/path/to/file.csv

⛔ Error (org-babel): Error reading results: (user-error "Region is 
longer than ‘org-table-convert-region-max-lines’ (999) lines; not 
converting")

I expected that :results none would simply drop the output rather than
complaining about it.

Even though it says "error", the results seem to be correct.

This is because blocks with :results none may still be used as input for
other source blocks as reference or noweb reference. So, the results are
computed, but not inserted or otherwise indicated.

Could you please provide a reproducer so that we fix the issue with
table conversion?