reportlab version in requirements.txt too low in python 3.6.9

[mof-landoo]

Impacted versions: 14.0

Steps to reproduce: in Stock/Products print barcodes in pdf. Ubuntu 18, Python 3.6.9, reportlab v = 3.5.13 (by default)

Current behavior: barcode is not printed

Tested in Ubuntu 18, Python 3.6.9, in requirements.txt reportlab version is 3.5.13, but in this version I can't print barcodes in pdf.
I have checked report.url in System Parameters and it's ok.

If I upgrade reportlab to last version (3.6.1) the problem is solved.

Someone has seen this behaviour too? Maybe it's necessary to update reportlab versions in requirements.txt

[BT-aestebanez]

+1 Tested on python 3.7.3
This commit is needed: reportlab: changeset 4614:0cf382dab63b
So this line

odoo/requirements.txt

Line 44 in d9758ae

reportlab==3.5.13; python_version < '3.8'

needs to be updated at least to 3.5.21

[BT-cjimeno]

Same behaviour for me with Python 3.7, I'm not able to print any barcode at all...

[Yenthe666]

@d-fence FYI