Invalid font results in large number of log entries

[tatcar55]

2020-05-22 17:22:14 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())

2020-05-22 17:22:14 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:14 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:14 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:13 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:13 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:13 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:13 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:13 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:13 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:13 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:13 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:13 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:13 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644
2020-05-22 17:22:13 - CMDPHP PHP ERROR WARNING Backtrace: (/graph_json.php[233]:rrdtool_create_error_image(), /lib/rrd.php[3644]:imagettftext(), CactiErrorHandler())
2020-05-22 17:22:13 - ERROR PHP WARNING: imagettftext(): Problem doing text layout in file: /var/www/html/cacti-1.2.12/lib/rrd.php on line: 3644

[netniV]

That would usually suggest that either you have manually set a font that doesn't exist or you have some other issue with the graph creation command line. Can you post your graph debug command?

[TheWitness]

Could be that the TTF file specified may not be a TTF file. I'm going to mask the error anyway.