Odoo17 version after installation styling not loading

Question

I am getting these errors after the installation.
*The style compilation failed, see the error below. This is an administrator or developer error that must be fixed for the entire database before continuing working.*
*A CSS error occured, using an old style to render this page.*
Please help to find the solution I tried to install multiple packages like npm, less, libsass, node etc but not work.

Thanks in advance

Bhushan vagh · Accepted Answer

insatll this required packges
sudo apt-get install python-dev python3-dev libxml2-dev libxslt1-dev zlib1g-dev libsasl2-dev libldap2-dev build-essential libssl-dev libffi-dev libmysqlclient-dev libjpeg-dev libpq-dev libjpeg8-dev liblcms2-dev libblas-dev libatlas-base-dev
sudo apt-get install -y npm
sudo ln -s /usr/bin/nodejs /usr/bin/node
sudo npm install -g less less-plugin-clean-css
sudo apt-get install -y node-less
if still not then istall libass packge as well
pip3 install libsass==0.12.3

Great Fermentations · Answer

So I know this doesn't seem right, but I ran into the same problem and tried to fix for hours. I ended up deleting my DB and started again. Loaded my first page and it STILL was throwing the style error. I literally did a hard refresh (Ctrl+F5) and it loaded. Not joking!

Nikolaus Weingartmair · Answer

After hours of seriously questioning life choices I found the issue.
The problem occures when using different setups with the same domain ip especially (Enterprise, non enterprise setups)
It has to do with the caching in Odoo. Some assets don't get reloaded. The assets get a 304 Not Modified (see logs). But in fact they are modified and produce these weeird errors.
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image [2]

[1] /web/image/67540476-4f24a58d/Bildschirmfoto%202025-04-17%20um%2020.

Chijioke Kanu · Answer

I installed Odoo 18 with PyCharm the normal way I used to, then I got the error. I struggled for many days uninstalling and Installing different packages without any success. Then I deleted the databse through the odoo database manager and recreated it, and everything started working.

Emmanuel Katwebaze · Answer

Hello so I faced the same issue and it disturbed me for days, I solved it by updating the base module. i.e. on your command line run python odoo-bin -c path_to_conf_file -u base.

reena · Answer

same error I have faced , resolved by if sass installed then pip uninstall sass , then pip install libsaas and change the db and run it  worked for me

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