Possible causes

The Fastjson version is outdated. Consequently, the consumer in the broadcasting consumption pattern fails to download the local offsets.json file and Fastjson cannot be started.

Recommended solution

Upgrade Fastjson to the version supported by ons-client to ensure that the local offsets.json file can be downloaded. By default, offsets.json is in the /home/{user}/.rocketmq_offsets/ directory.