After upgrading Joomla from 3.10.12 DE to 4.3.3 DE, the display for JA Medicare options and the embedded module preview is no longer functioning. Joomla caches have![](https://www.joomlart.com/forums/assets/files/2023-08-17/1692231120-519541-kdfc-ektf-j4-medicare.jpg)
![](https://www.joomlart.com/forums/assets/files/2023-08-17/1692231120-519541-kdfc-ektf-j4-medicare.jpg)
![](https://www.joomlart.com/forums/assets/files/2023-08-17/1692231212-456708-kdfc-ektf-j4-medicare-templ-path.jpg)
![](https://www.joomlart.com/forums/assets/files/2023-08-17/1692231212-456708-kdfc-ektf-j4-medicare-templ-path.jpg)
![](https://www.joomlart.com/forums/assets/files/2023-08-17/1692231120-519541-kdfc-ektf-j4-medicare.jpg)
been cleared multiple times, and both the T3 Plugin version 3.1.3 and Template version 3.0.0 have been reinstalled multiple times, resulting in some minor improvement in the display. In a similar setup with JA Medicare / T3 from Joomla 3.10.12 to J4.3.3 DE, the options and previews are functional and working well.
On this problematic page, setting the error reporting level to maximum causes a complete site crash. Additionally, on the subpage 'All Shops A-Z', after selecting a shop entry, a router error 'Undefined constant "T3_TEMPLATE_PATH' occurs, preventing content from being displayed. For example: [http://new.ekt-farmsen.de/index.php/de/shopinfos/alle-shops-a-z/shops-dienstleister/shops/dienstleistung/aenderungsschneiderei-reinigungsannahme-1-og.html]
The standard template style is 'ja_medicare - NE Green'. Each time changes are saved there, the 'features-1.ini' file is overwritten empty, and the columns of the Spotlight modules shift.
What do you suggest?