Redirect to 404 from profile and group

website/queries/group_page.php

@@ -33,7 +33,12 @@ function selectGroupByName($name) {
     if (!$stmt->execute()) {
         return False;
     }
-    return $stmt->fetch();
+    $row = $stmt->fetch();
+    if($row["groupID"] == null) {
+        return False;
+    }
+
+    return $row;
 }
 
 function selectGroupRole(int $groupID) {

website/queries/user.php

@@ -101,7 +101,9 @@ function selectUser($me, $other) {
 
     $stmt->bindParam(':me', $me, PDO::PARAM_INT);
     $stmt->bindParam(':other', $other, PDO::PARAM_INT);
-    $stmt->execute();
+    if(!$stmt->execute() || $stmt->rowCount() == 0) {
+        return False;
+    }
     return $stmt->fetch();
 }