Archive script: tcpdf_fonts Warning

@webteam-mh wrote:

When we ran the archiving script, we received the following warnings within a second (output formatted):

Log excerpt

WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(2001): Warning - array_map(): Expected parameter 2 to be an array, bool given
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(2009): Warning - array_merge(): Expected parameter 2 to be an array, null given
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(1799): Warning - count(): Parameter must be an array or an object that implements Countable
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/tcpdf.php(5236): Warning - count(): Parameter must be an array or an object that implements Countable
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(2001): Warning - array_map(): Expected parameter 2 to be an array, bool given
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(2009): Warning - array_merge(): Expected parameter 1 to be an array, null given
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/tcpdf.php(4061): Warning - Invalid argument supplied for foreach()
WARNING [2019-11-05 08:11:26] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(2009): Warning - array_merge(): Expected parameter 1 to be an array, null given
…
WARNING [2019-11-05 08:11:27] 8048 /var/www/matomo/vendor/tecnickcom/tcpdf/include/tcpdf_fonts.php(2009): Warning - array_merge(): Expected parameter 1 to be an array, null given

Matomo 3.12.0
PHP 7.3.11
CentOS 7.7.1908

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