[SOLVED] cacti0.8.6j not support thold0.3.9?

[nifi]

my cacti's version is 0.8.6j,wnen i copy thold to /var/www/cacti/plugins,and add "$plugins[] = 'thold';" to /var/www/cacti/include/config.php,the cacti works error,it display:
Fatal error: Call to undefined function api_user_realm_auth() in /var/www/cacti/plugins/thold/setup.php on line 325

i had used plugins as syslogs and weathermap,is ok.

[nifi]

I try thold0.3.4 ,it's ok!!!

[mcutting]

THOLD 0.3.9 doesn't work with previous versions of Cacti (lower than 0.8.7) as it requires several new hooks to function properly.

As you've indicated below, THOLD 0.3.4 appears to work fine.