Hi again, I finally solved the issue. It was a cache problem with my server, hosted in Site Ground. Site Ground has added a new caching service to our server and this service causes the problem.
Thank you very much for your help

I write to that contact email and sent all the credentials, but the issue persists, I need a solutions as soon as possible. I can’t update the news in my site.

Thank you very much. I sent just the info you asked

Thank you very much for your answer. I’ve done all you say, but the issue persists: when I modify or publish content, I only can see the new content if I’m logged in. Several ours (3-4 ours) after the publication is made, the contents are finally displayed without been logged. This issue starts yesterday since 13:00 pm more or less. As you have recommended me, I’ve installed WP Super Cache plugin, but until now I haven’t any cache plugin installed in my site.

Hi, I updated Newspaper theme to the last version as you said and the issue was solved
Thank you very much!!

Thank you very much, I’ve send all the info you asked.
Regards

Thank you very much for your answer, but I’ve done what you say:
– I’ve deactivated all the plugins except tagDiv
– I’m not using child theme, neither Cache plugins
– I’ve checked all the requirements and they are correct
but the issue persists.

Thanks Calin, I just sent you the email with the credentials

Hi Calin, I’ve tried with several browser and phones. I’ve tested it in Android and IOS too, but the problem persists. I deactivated the cache plugins more than 10 days ago.
Regards
Ramon

Hi Calin, thanks for your answer
I’m sending you some screenshots showing the problem

The problem is next:

0/ I post a new article:
1/ I google mondraberri and click the link mondraberri.net: Picture 1
2/ Mondraberri.net is opened , but the news displayed are the news I show the last time I visited mondraberri.net, yesterday. In Picture 2 you can see the date of the first new displayed: 9 urtarrilla 2020 (urtarrilla means January in Bask language)
3/ I must to reload the site to be able to see the news published after my last visit. In Picture 3 you can see the news displayed after reload the page. The news has 10 Jannyary 2020 date

sorry, I forgot providing the link to check the issue. You can see it in the home page of my site: mondraberri.net It is a local newspaper and the news are updated several times a day. If you check it, you will see that the news are not updated until you reload the page

Thank you very much Calin for your answer
I’ve deactivated all my cache plugins and non theme plugins, but the issue persists in mobile version (in desktop version there isn’t any problem and it loads correctly.
Regards
Ramon

Thanks for your answer Calin
I’ve the Version 10.2, but I only can select one category in the FRONT PAGE GRID CATEGORY FILTER menu, is it possible to select more than one categories?
Best regards
Ramon

Thank you very much for your quick answer

Hi Calin, I updated my site as you say and now it works correctly and the JSON error has disappeared

Thank you very much for your help
Ramon

I forgot to say that this error occurs only updating posts, but not updating pages. It I check the DevTools Console, the next error message is displayed:

api-fetch.min.js?ver=3.6.4:1 POST http://mondraberri2.adoxkomunikazioa.com/index.php/wp-json/wp/v2/posts/78?_locale=user net::ERR_EMPTY_RESPONSE