okhttp3.RequestBody.create(Ljava/lang/String；Lokhttp3/MediaType；)Lokhttp3/RequestBody

okhttp3.RequestBody.create(Ljava/lang/String;Lokhttp3/MediaType;)Lokhttp3/RequestBody;

这个错是maven冲突了，配置一下就好了

            org.web3j
            core
            5.0.0
        
        
            com.squareup.okhttp3
            okhttp
            4.3.1