The command is partially executed. How to fix the error?

Question

linux

I connected an old fujitsu fi-6770A scanner via USB to Centos7. Installed: PHP 7.3, Sane, phpSane.
PHP creates and runs the script:

/usr/bin/scanimage -d "fujitsu:fi-6770dj:498" -l 0mm -t 0mm -x 210mm -y 296.926mm --mode "Gray" --resolution 200dpi --brightness 0 --contrast 0 --source "ADF Front" --format=tiff --batch='./tmp/out_517771_%d.tif' --batch-start=10 && /usr/bin/convert './tmp/out_517771_*.tif' -compress jpeg -quality 90 -density 200 pdf:- > './output/scan_2021-07-28_13.33.16.pdf'

TIFF files are created. The second part of the script is not executed.
Through SSH in the console:

su -m apache -c '/usr/bin/convert './tmp/out_517771_*.tif' -compress jpeg -quality 90 -density 200 pdf:- > './output/scan_2021-07-28_13.33.16.pdf''

PDF created.
For a console test:

su -m apache -c '/usr/bin/scanimage -d "fujitsu:fi-6770dj:498" -l 0mm -t 0mm -x 210mm -y 297mm --mode "Gray" --resolution 200dpi --brightness 0 --contrast 0 --source "ADF Front" --format=tiff --batch='./tmp/out_511_%d.tif' --batch-start=10 && /usr/bin/convert './tmp/out_511_*.tif' -compress jpeg -quality 90 -density 200 pdf:- > './output/scan_2021-07-28.pdf''

And I get a possible answer why the second part does not work:

Scanning page 16
Scanned page 16. (scanner status = 5)
Scanning page 17
scanimage: sane_start: Document feeder out of documents

Document feeder out of documents Correctly, the document has ended and there are no sheets in the ADF.
I'm not sure what's due to this. I want confirmation.
1) How to rewrite scanimage so that the response is needed for the second part of the command?
or
2) What to add or rewrite so that the second part would run even if there are errors?

phpSane from here https://github.com/gawindx/phpSane

Answer 1

&&-> ;
&& - the next command will be executed if the first one is successful - returned 0