Fix TypeError when getting thumbnail for invalid ID

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 5 insertions, 0 deletions

diff --git a/application/models/mfile.php b/application/models/mfile.php
index ea81ee32d..feccfcb8f 100644
--- a/application/models/mfile.php
+++ b/application/models/mfile.php
@@ -131,6 +131,11 @@ class Mfile extends CI_Model {
 	public function valid_id($id)
 	{
 		$filedata = $this->get_filedata($id);
+
+		if (!$filedata) {
+			return false;
+		}
+
 		return \service\files::valid_id($filedata, $this->id_validation_config, $this, time());
 	}