Steps to reproduce:

1. Setup zabbix frontend config file,

$HISTORY['url'] = [
 'text' => 'http://localhost:9200'
];
// Value types stored in Elasticsearch.
$HISTORY['types'] = ['uint', 'text']; 

1. Navigate to the Latest data page,
2. Wait ~30 sec to see second error message.

Result:

Expected: The error should appear only once.

Note: Same issue was observed with following error messages:

• <HistoryProvider> URL is not set for type: %1$s. 
• <HistoryProvider> credentials are not set for type: %1$s. 
• <HistoryProvider> connection failed.
• <HistoryProvider> error: %1$s.