Getting a Blank Page after putting Typo3 on a Docker Container

Question

I'm trying to setup an existing Typo3-Projekt on a Docker container.

I get a blank site and the Errorlog says:

Mon, 20 Jan 2020 16:00:12 +0000 [CRITICAL] request="" component="TYPO3.CMS.Core.Error.ProductionExceptionHandler": Core: Exception handler (WEB): Uncaught TYPO3 Exception: #1203699034: A cache with identifier "assets" does not exist. | TYPO3\CMS\Core\Cache\Exception\NoSuchCacheException thrown in file /var/www/html/typo3/sysext/core/Classes/Cache/CacheManager.php in line 131.

The cache is already deleted.

Answer 1

As usual:
get more information by enabling develop-mode in install-tool (Admin-Tools -> Settings) -> Configuration Preset. also enable a stacktrace by adding

config.contentObjectExceptionHandler = 0 

to your typoscript.

Regarding assets:
if you copied an existing instance into docker, have you copied or cleared all temporary data?
In the Install-Tool (Admin-Tools -> Maintenance) : Remove Temporary Assets

Answer 2

The problem was the Docker Environment. Docker has a strange way setting the file permissions. Anyway, i recommend using ddev for Local ENV.

Answer 3

I had this Problem in ddev 1.13.0 and the only way to solve it for me, was upgrading ddev to 1.13.1

To upgrade ddev, you can simply execute: brew upgrade ddev

Keep in mind that all projects have to be updated as well by simply running ddev config again for this projects.