how can i get rid of a zombie channel in LND? My LN-Node: 023bf99414b3e93ab7463ce60f44cd691f8be3c1ae33a2015fe784c85c36e770cf
bitcoind 0.17.1 // LND 0.5.2-beta commit=v0.5.2-beta-rc7

Channel: 598078250466476032

Problem: lncli feereport returns:
 rpc error: code = Unknown desc = no policy for outgoing channel 

edit: 
more of the same?
lncli fwdinghistory returns:

{
    "forwarding_events": [
    ],
    "last_offset_index": 0
}

related?
trying to edit a recent channels policy..

"channel_id": "620981077780267008",
    "chan_point": "e388cce2698c0406985af2fce27ee47c5f02b04e8fbda0523975b71246e66d77:0",
    "last_update": 1551629972,
    "node1_pub": "023bf99414b3e93ab7463ce60f44cd691f8be3c1ae33a2015fe784c85c36e770cf",
    "node2_pub":
 "03efccf2c383d7bf340da9a3f02e2c23104a0e4fe8ac1a880c8e2dc92fbdacd9df",
    "capacity": "500000",
    "node1_policy": {
        "time_lock_delta": 144,
        "min_htlc": "0",
        "fee_base_msat": "1000",
        "fee_rate_milli_msat": "1",
        "disabled": false
    },
    "node2_policy": {
        "time_lock_delta": 14,
        "min_htlc": "1000",
        "fee_base_msat": "485",
        "fee_rate_milli_msat": "1",
        "disabled": false  

lncli updatechanpolicy --base_fee_msat 419 --fee_rate 0.000001 --time_lock_delta 14 --chan_point e388cce2698c0406985af2fce27ee47c5f02b04e8fbda0523975b71246e66d77:0

[lncli] rpc error: code = Unknown desc = Channel from self node has no policy
this was fixed in version 0.6-beta