can't query with chinese

hello:
There is a problem in my use: can’t query with chinese.

****evn:

centos6.10

redis-5.0.7

redisearch.so v1.4.19(from :https://github.com/RediSearch/RediSearch/releases/download/v1.4.19/redisearch.so)

create index :

  FT.CREATE myIdx SCHEMA title TEXT body TEXT

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