Unexpected length encoding 'ff' encountered

When I try to startup maxscale with avrorouter on it fail because of this message :

2017-02-07 08:01:46 notice : replication-service: Request binlog records from mariadb-bin.000077 at position 51905058 from master server 192.168.80.XX:3306
2017-02-07 08:01:46 notice : replication-service: identity seen by the master: server_id: 4000, uuid: 4846a3c2-ed03-11e6-a8c3-0050569bd68b
2017-02-07 08:01:46 notice : replication-service: identity seen by the slaves: server_id: 3000, hostname: ZZ-DB-04, MySQL version: 10.0.25-MariaDB-wsrep
2017-02-07 08:01:46 [7] info : > Autocommit: [enabled], trx is [not open], cmd: UNKNOWN MYSQL PACKET TYPE, type: N/A, stmt: "
2017-02-07 08:01:46 [7] info : Route query to master 192.168.80.YY:3306 <
2017-02-07 08:01:46 notice : Loaded module MySQLAuth: V1.0.0 from /usr/lib64/maxscale/libMySQLAuth.so
2017-02-07 08:01:47 error : Failed to initialize avrofile.
2017-02-07 08:01:47 error : Failed to open file '/var/lib/maxscale/avro/bbdb.mediator_execution.000001.avro' when generating file index.
2017-02-07 08:01:47 error : Failed to read field value 'address1_', type 'string' at file offset 17189, record numer 308.
2017-02-07 08:01:47 notice : Schema version 1 already exists: /var/lib/maxscale/avro/symwis.address.000001.avsc
2017-02-07 08:01:47 error : Unexpected length encoding 'ff' encountered when reading length-encoded integer.
2017-02-07 08:01:47 error : Unexpected length encoding 'ff' encountered when reading length-encoded integer.
2017-02-07 08:01:47 error : Unexpected length encoding 'ff' encountered when reading length-encoded integer.
2017-02-07 08:01:47 error : Unexpected length encoding 'ff' encountered when reading length-encoded integer.