Real-time Graphing does not work on any graphs that are managed on the remote poller.

The following errors are seen in cacti.log on the remote poller:

2023/01/27 14:36:11 - CMDPHP Validation Error, Variable:poller_id, Value:f18ab1c955eab34b5daf2660ccaa4c271c0848779842f867d1c2b5375a7eaabf Backtrace: (/remote_agent.php[66]:poll_for_data(), /remote_agent.php[301]:get_filter_request_var(), /lib/html_utility.php[493]:die_html_input_error(), /lib/html_validate.php[64]:cacti_debug_backtrace())
2023/01/27 14:36:12 - CMDPHP Validation Error, Variable:poller_id, Value:f18ab1c955eab34b5daf2660ccaa4c271c0848779842f867d1c2b5375a7eaabf Backtrace: (/remote_agent.php[66]:poll_for_data(), /remote_agent.php[301]:get_filter_request_var(), /lib/html_utility.php[493]:die_html_input_error(), /lib/html_validate.php[64]:cacti_debug_backtrace())