hero slider created successfully but not show

Thanks, jjwfcd, for reporting.
What are the file permissions for the files folder?
Are you getting any error logs or warning logs in syslog?

besides the page not found，only php error is

Warning: Array to string conversion in Drupal\date_filter\Plugin\views\filter\DateBase->getProcessedDate() (line 372 of /docroot/modules/contrib/date_filter/src/Plugin/views/filter/DateBase.php)

more tests found that blog‘s images， head image or images in text body， all cannot display.

it must be the stlye of drimage_improved

files permission was set to 777

ps: 10.0-rc3 does not have this problem

maybe the same reason

rich eidtor of 10.0.0 does not show while editing longtext

but in 10.0.0-rc3 it does well

it seems to be server configure problems，after disabled cache server varnish，it works fine.

I will try to tuning the revers proxy config

sorry for waste your time