Migrate Issue

[mettmoeurng]

Dear all,
I am new to Cacti, I just started with Cacti for a few months.
I have migrated my Cacti from version 0.8.8b to 1.2.2 on OS: Debian 10.3
After I migrated, in the Cacti log shown:

2020/04/14 15:26:20 - ERROR PHP NOTICE: Undefined index: data_template_id in file: /usr/share/cacti/site/data_templates.php on line: 588
2020/04/14 15:26:20 - CMDPHP PHP ERROR NOTICE Backtrace: (/data_templates.php[67]:template_edit(), /data_templates.php[588]:CactiErrorHandler())
2020/04/14 15:26:20 - ERROR PHP NOTICE: Undefined index: data_sources in file: /usr/share/cacti/site/data_templates.php on line: 642
2020/04/14 15:26:20 - CMDPHP PHP ERROR NOTICE Backtrace: (/data_templates.php[67]:template_edit(), /data_templates.php[642]:CactiErrorHandler())
2020/04/14 15:26:20 - ERROR PHP NOTICE: Undefined index: data_sources in file: /usr/share/cacti/site/data_templates.php on line: 642
2020/04/14 15:26:20 - CMDPHP PHP ERROR NOTICE Backtrace: (/data_templates.php[67]:template_edit(), /data_templates.php[642]:CactiErrorHandler())
2020/04/14 15:26:20 - ERROR PHP NOTICE: Undefined index: data_input_id in file: /usr/share/cacti/site/data_templates.php on line: 711
2020/04/14 15:26:20 - CMDPHP PHP ERROR NOTICE Backtrace: (/data_templates.php[67]:template_edit(), /data_templates.php[711]:CactiErrorHandler())
2020/04/14 15:26:20 - ERROR PHP NOTICE: Undefined index: data_input_id in file: /usr/share/cacti/site/data_templates.php on line: 716
2020/04/14 15:26:20 - CMDPHP PHP ERROR NOTICE Backtrace: (/data_templates.php[67]:template_edit(), /data_templates.php[716]:CactiErrorHandler())

[TheWitness]

I would recommend that you find a way to get to 1.2.10 or 1.2.11 ASAP.