After reading any kind of solution, i need your help to solve my problem. Magento 2.1.2, PHP7, Ubuntu. Fresh install, created new theme. When i switch to the new theme, this error appears even in frontend that in backend (backend shouldn't be a problem!):
Frontend error
Backend error
Already tried:
- Switch back to original template
- php bin/magento setup:static-content:deploy
- Set developer mode
- var/cache and pub/static (less then .htaccess) cleaned
- Ownership check (magento_user:www-data for all files), permissions ok
I think it's just amazing! I can understand any problem, but this is really strange. Why should the backend be affected by this problem? Why, even if i set mode developer, magento 2 tries to get some "static/_cache" CSS file?
Thanks

