PHP 7.3.1 errors galore in logs

Hi,
My PHP logs are FILLED with these errors:

PHP Warning: preg_match(): Compilation failed: invalid range in character class at offset 4 in C:\wamp64\www\wp-content\plugins\nextgen-gallery\products\photocrati_nextgen\modules\simple_html_dom\simplehtmldom\simple_html_dom.php on line 1384

Line 1384

		if (!preg_match("/^[\w-:]+$/", $tag)) {
			$node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
			if ($this->char==='<') {
				$this->link_nodes($node, false);
				return true;
			}

			if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
			$this->link_nodes($node, false);
			$this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
			return true;
		}

PHP Warning: preg_match_all(): Compilation failed: invalid range in character class at offset 4 in C:\wamp64\www\wp-content\plugins\nextgen-gallery\products\photocrati_nextgen\modules\simple_html_dom\simplehtmldom\simple_html_dom.php on line 686

Line 686
preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);

PHP Warning: Invalid argument supplied for foreach() in C:\wamp64\www\wp-content\plugins\nextgen-gallery\products\photocrati_nextgen\modules\simple_html_dom\simplehtmldom\simple_html_dom.php on line 693

Line 693

		foreach ($matches as $m) {
			$m[0] = trim($m[0]);
			if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
			// for browser generated xpath
			if ($m[1]==='tbody') continue;

			list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
			if (!empty($m[2])) {$key='id'; $val=$m[2];}
			if (!empty($m[3])) {$key='class'; $val=$m[3];}
			if (!empty($m[4])) {$key=$m[4];}
			if (!empty($m[5])) {$exp=$m[5];}
			if (!empty($m[6])) {$val=$m[6];}

			// convert to lowercase
			if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
			//elements that do NOT have the specified attribute
			if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}

			$result[] = array($tag, $key, $val, $exp, $no_key);
			if (trim($m[7])===',') {
				$selectors[] = $result;
				$result = array();
			}
		}

Tried: switching themes, deactivating plugins.
NGG info:

System operacyjny : WINNT (64 Bit)
Serwer : Apache/2.4.37 (Win64) OpenSSL/1.1.1a PHP/7.3.1 mod_fcgid/2.3.10-dev
Zu?ycie pami?ci : 110.21Mbajtów
Wersja MySQL : 10.3.12-MariaDB
Ustawienie SQL : ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
Wersja PHP : 7.3.1
PHP Safe Mode : Wy??czone
PHP zezwól na URL fopen : W??czone
PHP limit pami?ci : 128
PHP maksymalna wielko?? wgrywania : 2M
PHP maksywalna wielko?? postu : 8M
Limit Backtrackingu PCRE : 1000000
PHP maksymalny czas wykonywania skryptu : 120s
PHP wsparcie dla Exif : Tak (V7.3.)
PHP wsparcie dla IPTC : Tak
PHP wsparcie dla XML : Tak
Biblioteka grafik

GD Version : bundled (2.1.0 compatible)
FreeType Support : Tak
FreeType Linkage : with freetype
GIF Read Support : Tak
GIF Create Support : Tak
JPEG Support : Tak
PNG Support : Tak
WBMP Support : Tak
XPM Support : Tak
XBM Support : Tak
WebP Support : Tak
BMP Support : Tak
JIS-mapped Japanese Font Support : Nie