Uncaught exception: DateTime::__construct()

For one reason or another, after two days, the problem just disappeared. Maybe, after all, it does have something to do with caching in some sense, or maybe there was just a temporary issue with the icals from google.

The only downside: I will not be able to analyze the issue further.

Thanks however for your quick reaction!

This morning I tried to follow your suggestions from last time, but I cannot access my page for now. Hoster is contacted.

Thanks so far!

After all, it seems to have something to do with my pluggable plugin:

<?php
/*
Plugin Name: amr_test_pluggable
Author: anmari
Author URI: http://anmari.com/
Plugin URI: http://icalevents.com
Version: 1.0
Text Domain: amr_test_pluggable
Domain Path:  /lang

Description: test the amr-events and amr-ical-events-list pluggable functions.
*/

function amr_list_events ($events,  $id, $class, $show_views=true) {
global $amr_listtype;
	$htmlo = '';
	$no_events = count($events);

if(!function_exists('spalte')) {
function spalte ($von, $bis_exkl, $events, $doppelt, $monat=1) {
	setlocale(LC_ALL, 'de_DE');

	$spalteo = '<div>';
	for ($i=$von; $i<$bis_exkl; $i++) {
		$event = $events[$i];
		// DESIGN ANFANG
	if($event['URL'][0]!='') {
			$spalteo .= '<a href="';
			$spalteo .= $event['URL'][0];
			$spalteo .= '#">';
	}
			$spalteo .= '<div class="eventbox" title="';
			$spalteo .= $event['LOCATION'];
			$spalteo .= '"><span class="eventbadge">';
			$spalteo .= substr($monat,0,3);
			$spalteo .= '<strong>';
			$spalteo .= strftime('%d',$event['EventDate']->format('U'));
			$spalteo .= '</strong></span><span class="eventtime">';
			$spalteo .= strftime('%H:%M',$event['EventDate']->format('U'));
			$spalteo .= '</span><span class="eventname">';
			$spalteo .= $event['SUMMARY'][0];
			$spalteo .= '</span></div>';
	if($event['URL'][0]!=='')
			$spalteo .= '</a>';
			// DESIGN ENDE
			if($doppelt) $i++;
	}
	$spalteo .= '</div>';

	return($spalteo);
}}

// In die Monate aufteilen.
$monatsname = array(1=>"Januar",
                2=>"Februar",
                3=>"März",
                4=>"April",
                5=>"Mai",
                6=>"Juni",
                7=>"Juli",
                8=>"August",
                9=>"September",
                10=>"Oktober",
                11=>"November",
                12=>"Dezember");
if(!function_exists('add_1_to')) {
function  add_1_to ($monat) {
	$ret = $monat+1;
	if ($monat==12) $ret=1;
	return $ret;
}}

$month[0]=(int)strftime('%m',$events[0]['EventDate']->format('U'));
$starts[$month[0]]=0;
for ($j=1;$j<$no_events;$j++) {
	$month[$j] = (int)strftime('%m',$events[$j]['EventDate']->format('U'));
	if ($month[$j] != $month[$j-1]) $starts[$month[$j]]=$j;
}
$starts[add_1_to($month[$no_events - 1])]=$no_events;
// Hier entscheidet sich, welcher Listentyp gefragt ist.

//  Zweispaltige Liste
if ($amr_listtype=='1') {
	foreach ($starts as $monat => $erstesElement) {
		$htmlo .= '<h3></h3>';
		$htmlo .= '<div style="float:left; width:49%;" class="eventm'.$monat.'">';
		$htmlo .= spalte($erstesElement, $starts[add_1_to($monat)], $events, true, $monatsname[$monat]);
		$htmlo .= '</div><div style="float:right; width:49%;" class="eventm'.$monat.'">';
		$htmlo .= spalte($erstesElement+1, $starts[add_1_to($monat)], $events, true, $monatsname[$monat]);
		$htmlo .= '</div>';
	}
}

// Einspaltige kurze Liste
elseif ($amr_listtype=='2') {
	foreach ($starts as $monat => $erstesElement) {
		$htmlo .= '<div class="eventm'.$monat.'">';
		$htmlo .= spalte($erstesElement, $starts[add_1_to($monat)], $events, false, $monatsname[$monat]);
		$htmlo .= '</div>';
		}
}

// Widget
elseif ($amr_listtype=='3')  {
	$htmlo .= '<ul>';
	foreach ($events as $i=>$event) {
		$htmlo .= '<li style="white-space:nowrap;">'.strftime('%d.%m.',$event['EventDate']->format('U'));
		$htmlo .= ' <strong>'.$event['SUMMARY'][0].'</strong></li>';
	}
	$htmlo .= '</ul>';
}
return($htmlo);
}

I do not expect you to debug it for me; as said, for me the problem is pretty much solved now. This is just for your help, in case you are interested.