Hello. I have ovs 2.8.6. I have RYU Controller. I am trying to add a Group
Entry in my switch via RYU controller. I found send_group_mod
<https://ryu.readthedocs.io/en/latest/ofproto_v1_5_ref.html> function here.
I copy pasted the exact code ( I called this function when EventOFPPacketIn
was triggered i.e. in  _packet_in_handler function) to check if it's
working but got this error:

OFPErrorMsg(type=0x6, code=0xc,
data=b'\x06\x0f\x00\x20\x4c\x6d\x56\x22\x00\x00\x01\x00\x00\x00\x00\x01\x00\x08\x00\x00\x00\x00\x00\x01\x00\x08\x00\x00\x00\x00\x00\x64')
 |-- type: OFPET_GROUP_MOD_FAILED(6)
 |-- code: OFPGMFC_BAD_BUCKET(12)
 `-- data: version=0x6, msg_type=0xf, msg_len=0x20, xid=0x4c6d5622
     `-- msg_type: OFPT_GROUP_MOD(15)

Please let me know what I am doing wrong. I have eth0 connected to my
switch on OpenFlow port 1.

#ovs-vsctl show
 Bridge "br0"
        Controller "tcp:10.0.0.6:6633"
            is_connected: true
        Port "eth2"
            Interface "eth2"
        Port "br0"
            Interface "br0"
                type: internal
    ovs_version: "2.8.6"


Best Regards,
Ramzah Rehman
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