问rlm_rest (rest): Connection failed: rest 模块怎么配置？

Fri May 13 06:11:41 2022 : Info: rlm_rest (rest): Opening additional connection (0), 1 of 32 pending slots used

Fri May 13 06:11:41 2022 : Debug: rlm_rest (rest): Connecting to "http://127.0.0.1:8902"

Fri May 13 06:11:41 2022 : Error: rlm_rest (rest): Connection failed: 7 - Couldn't connect to serve

Fri May 13 06:11:41 2022 : Error: rlm_rest (rest): Opening connection failed (0)

Fri May 13 06:11:41 2022 : Debug: rlm_rest (rest): Removing connection pool

Fri May 13 06:11:41 2022 : Error: /usr/local/etc/raddb/mods-enabled/rest[1]: Instantiation failed for module "rest"