no css in developer mode

[christian_meyer]

when I switch to developer mode, no css is loaded - neither in backend nor in frontend. When I switch back to production mode everthing is fine.

I found out that it tries to load ext-all.min.css - this is the minified css file and as minification is not applied in developer mode,  I guess that's the culprit?!

How can I get my styles in developer mode back, preferably without disabling the minification (which I can't anyway, it requires developer mode)?

[Tarandeep Singh]

@christian_meyer  Not sure if you already tried. I guess below commands will help.

sudo rm -Rf pub/static/frontend/* var/pre_processed/* pub/static/_requirejs/*
sudo rm -Rf var/generation/* var/di/* var/cache/*
sudo php bin/magento setup:static-content:deploy -f
sudo php bin/magento cache:clean
sudo php bin/magento cache:flush
sudo chmod -R 777 var/ pub/ generated/

You need to do the same everytime you switch the mode.

Problem solved? Please give 'Kudos' and accept 'Answer as Solution'.

[christian_meyer]

I don't have all the directories you mentioned, I don't have:

var/pre_processed/

pub/stativ/_reqirejs/

var/generation/

var/di/

Maybe it's, but what else?

generated/

var/view_preprocessed/

It's M2.3.1 CE!

[Tarandeep Singh]

@christian_meyer  It's fine if you do not have some of the directory mentioned. Let know if things worked for you...

Problem solved? Please give 'Kudos' and accept 'Answer as Solution'.

[christian_meyer]

you're funny man, the only directory I have you mentioned is pub/static/frontend/* ;  I don't have css in the backend?

Which directories do I have to remove? Why do I have to do it, I have another installation running, where switching to developer mode works without deleting anything.