Missing field "location" - Missing field "startDate" & "image"

Hello

some weeks now in google webmasters tools they note that all event urls missing the image, location & startdate(the last is not error just info).

Do you now why google not read the jem image & jem location?

thank you

Hello again

this week i see thin in webmasters. Do you now enyone how i can fix it?
My site is athens-dayandnight.gr i use JEM 2.3 version in joomla 3.9.13

Thank you

Sorry, our programmers seem to be absent atthe moment.

Hello
is any one to have the same problem to help me? see the photo please

Thank you

Hey, sorry, but I can't find JEM-Joomlaventmanager in your sites.
Ah I found e.g.
athens-dayandnight.gr/eventlist/event/9394-ethniko-theatro-akrovaton-tis-kinas
but I only get 3 warnings and 0 errors.
and no missing location or startDate or image.

Hello Jojo22

see the urls :
category athens-dayandnight.gr/agenda-events-athens/events
details view athens-dayandnight.gr/agenda-events-athens/lives