Fatal error: Uncaught Error: Call to undefined function wp_load_translations_early() in /volume2/web/divinglog/includes/wp-db.php on line 1407

Error: Call to undefined function wp_load_translations_early() in /volume2/web/divinglog/includes/wp-db.php on line 1407

Call Stack:
    0.0000     358624   1. {main}() /volume2/web/divinglog/divetrip.php:0
    0.0021     428432   2. Divetrip->get_divetrip_overview() /volume2/web/divinglog/divetrip.php:58
    0.0025     429808   3. Divetrip->get_divetrip_overview_table($sql = 'SELECT t.ID, t.TripName, t.ShopID, t.CountryID, c.Country, s.ShopName, t.PhotoPath\nFROM (( DL_Trip t\nLEFT JOIN DL_Country c ON t.CountryID = c.ID )\nLEFT JOIN DL_Shop s ON t.ShopID = s.ID )\nORDER BY t.TripName ASC\n') /volume2/web/divinglog/classes.inc.php:3540
    0.0025     430320   4. parse_mysql_query($filename = '', $sql_query = 'SELECT t.ID, t.TripName, t.ShopID, t.CountryID, c.Country, s.ShopName, t.PhotoPath\nFROM (( DL_Trip t\nLEFT JOIN DL_Country c ON t.CountryID = c.ID )\nLEFT JOIN DL_Shop s ON t.ShopID = s.ID )\nORDER BY t.TripName ASC\n', $debug = ???) /volume2/web/divinglog/classes.inc.php:3572
    0.0032     431200   5. wpdb->get_results($query = 'SELECT t.ID, t.TripName, t.ShopID, t.CountryID, c.Country, s.ShopName, t.PhotoPath\nFROM (( DL_Trip t\nLEFT JOIN DL_Country c ON t.CountryID = c.ID )\nLEFT JOIN DL_Shop s ON t.ShopID = s.ID )\nORDER BY t.TripName ASC\n', $output = 'ARRAY_A') /volume2/web/divinglog/includes/misc.inc.php:186
    0.0032     431520   6. wpdb->query($query = 'SELECT t.ID, t.TripName, t.ShopID, t.CountryID, c.Country, s.ShopName, t.PhotoPath\nFROM (( DL_Trip t\nLEFT JOIN DL_Country c ON t.CountryID = c.ID )\nLEFT JOIN DL_Shop s ON t.ShopID = s.ID )\nORDER BY t.TripName ASC\n') /volume2/web/divinglog/includes/wp-db.php:2614
    0.0034     431520   7. wpdb->print_error($str = ???) /volume2/web/divinglog/includes/wp-db.php:1916