[horde] Kronolith problem

[R.J.Baart at Prompt.nl]

Further information is perhaps helpful.

If an event has no information stored about the location, there is no 
problem.

And before the mentioned error there is always an other error:

    HORDE [kronolith]
    PHP ERROR: Undefined array key "api" [pid 860957 on line 70
    of "(...)/horde/vendor/horde/core/lib/Horde/Core/HordeMap.php"]

  Op 2026-04-14 om 23:12 schreef Ruud Baart:

> Kronolith (horde/kronolith 5.0.0alpha11) has a problem with geomap:
>
>    2026-04-14T20:52:53+00:00 WARN: HORDE [kronolith] PHP ERROR:
>    Trying to access array offset on null [pid 860957 on line 78
>    of "/some/path/horde/vendor/horde/core/lib/Horde/Core/HordeMap.php"]
>
> I think this error blocks the CALDAV synchronisation (in Thunderbird). 
> In the webinterface events are shown but calender -> event -> search 
> in map results in endless search without end. I assume this is the 
> same problem.
>
> Configuring horde->Maps
>
>  * $conf[maps][driver]: horde driver or no inline support, both options
>    blocks CALDAV sync
>  * switching between the providers in $conf[maps][providers] makes no
>    difference
>  * $conf[maps][geocoder] must be Google (otherwise configuration error)
>  * $conf[maps][geodriver]: no difference between the choices
>
> all $conf[api][xxxx] are empty.
>
>