Error in daily.log

Every day in the daily.log I get the following message :
No cached PeeringDB data found, sleeping for 17 seconds
SQL Error! SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘)’ at line 1 (SQL: DELETE FROM pdb_ix WHERE pdb_ix_id NOT IN ()) (SQL: DELETE FROM pdb_ix WHERE pdb_ix_id NOT IN ())

Do I need to do something?

Run validate.php and post the output. Please

[[email protected] librenms]# ./validate.php

Component Version
LibreNMS 1.42.01-64-gfefde75
DB Schema 260
PHP 7.2.6
MySQL 5.5.56-MariaDB
RRDTool 1.4.8


[OK] Composer Version: 1.7.2
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct
[FAIL] Missing PHP extension: mysqlnd
[FIX] Please install mysqlnd