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vendor/data-values/data-types/js/resources.php on line 19
vendor/data-values/javascript/lib/resources.php on line 16
vendor/data-values/javascript/src/resources.php on line 16
vendor/data-values/javascript/src/valueFormatters/resources.php on line 15
vendor/data-values/javascript/src/valueParsers/resources.php on line 16

This is the result of duplicate code in these 5 files that explodes a path assuming a delimiter that contains "extensions".  Since composer, the install path is no longer in the extensions directory, but in $vendorDir.

Problem code:
return call_user_func( function() {
	$remoteExtPathParts = explode(
		DIRECTORY_SEPARATOR . 'extensions' . DIRECTORY_SEPARATOR, __DIR__, 2
	);

	$moduleTemplate = array(
		'localBasePath' => __DIR__,
		'remoteExtPath' => $remoteExtPathParts[1],
	);