Question posted in 
Some of the installed extensions (e.g. wacon cookie manengment) are not available in the backend (site definition). If I include them in my site package via config.yaml, I get the error message that the link to the extension cannot be found.
I can access various functions – for wacon cookie menengment: assign coocies and integrate the dialogue for consent. Unfortunately, the CSS file is not loaded.
Composer installation via Plesk
I have activated the extension with extention:setup
It is a Typo3 v13.4, also with a Composer installation via Plesk
2
Answers
If I try to include in the Template, I get an Error massage. The Path doesn't exist. If I use the command vendor/bin/typo3 site:sets:list the extension wacon-cookie-manengment ist not listed.
Also I try to include in config.yaml dependencies:
I get an Error Massage - that the extension doesen't exist. This is the Error Massage in the Backend: Diese Site hängt von ungültigen Site-Sets ab Site-Set 'waconcookiemanagement/wacon-cookie-management' nicht gefunden (referenziert von 'site:home')
Maybe something didn't work with the installation in Composer via Plesk?
To integrate many TYPO3 extensions you need to integrate the TypoScript settings. Mostly done in the "Template" module, from v13 on you can add TypoScript per site in the Site Sets.
Documentation: