Sorry, this downside wants an extended description and I do not actually have any code to publish (or slightly, I would not know what code to publish – see under)…
I’m utilizing the Occasions Supervisor plugin in two web sites with two self-created themes. These themes are very comparable regarding HTML buildings, php code and javascripts, they differ primarily layout-wise, i.e. the CSS ist fairly completely different. Each themes work with out issues within the frontend.
Nevertheless, within the BACKEND there’s a downside with Occasions Supervisor’s itemizing of occasions that solely occurs when utilizing (let’s name it) Theme A: When (within the choose menu above the checklist of occasions) I select to show "past events" or "all events" (or really every other possibility from that menu besides the default "future events"), the result’s an empty checklist of occasions with a word "no events found".
On the high of that web page the next word seems: Discover: Array to string conversion in /Functions/MAMP/htdocs/mywebsite/wp-admin/edit.php on line 329. And immediately above the checklist all choose menus and buttons besides the "Filter selection" button disappear (sorry, I’m not positive concerning the English textual content of that button since I’m on a German system the place that button is labeled "Auswahl einschränken").
What I did to verify/debug:
- I disabled all plugins (besides Occasions Supervisor) – nonetheless the identical behaviour
- I switched Web site A to different themes – the behaviour disappeared.
- I copied Theme A to Web site B (on the identical server) and chosen it there: Identical behaviour, though when utilizing (the very comparable) Theme B in Web site B the issue does not happen.
- I disabled virtually all the completely different capabilities within the
capabilities.phpfile one after the other: no distinction. - I switched to a distinct PHP model (7.4.12 to eight.0): no luck.
So the issue apparently actually is attributable to the theme. However wherein method can a theme have an effect on the backend show? – I undoubtedly did not add something to the theme to switch the backend. In comparison with business themes that theme is slightly easy. And as I wrote: That theme (A) is sort of equivalent to my Theme B, the place this downside doesn’t happen.
Does anybody have an concept what (in a theme) might trigger this behaviour? I’m actually caught right here and admire any suggestions.