Transaction fee is null

[qbig]

https://zcashnetwork.info/api/tx/08e894a01b2727e555a5ce1278aa4296ce73fc32a10c801877d7bfa4fec7f638

{
txid: "08e894a01b2727e555a5ce1278aa4296ce73fc32a10c801877d7bfa4fec7f638",
version: 4,
locktime: 655162,
vin: [
{
txid: "113eceabf69dfb38316ff50bebdbe5b6368528218f5288f6d01a12bc9c703412",
vout: 0,
sequence: 4294967294,
n: 0,
scriptSig: {
hex: "4830450221009b5dcb8353f4c3c8406bf2cd1f4e992fdbdb92a1f1b1d8405a93f1595301663102205b97b46cf6c6050dc26e4edc2baa9a07b4e13bedb8ea9602b0d57f56cc9170db0121020ebb6fc2813cebe13ca28a6a06039c6ea70c0a8a932ce7fbc13a17d72b270869",
asm: "30450221009b5dcb8353f4c3c8406bf2cd1f4e992fdbdb92a1f1b1d8405a93f1595301663102205b97b46cf6c6050dc26e4edc2baa9a07b4e13bedb8ea9602b0d57f56cc9170db[ALL] 020ebb6fc2813cebe13ca28a6a06039c6ea70c0a8a932ce7fbc13a17d72b270869"
},
addr: null,
valueSat: null,
value: 0,
doubleSpentTxID: null
}
],
vout: [
{
value: "9.99900000",
n: 0,
scriptPubKey: {
hex: "76a914005841e6c631f1ff2da4c79e3e5f76fc96322c1788ac",
asm: "OP_DUP OP_HASH160 005841e6c631f1ff2da4c79e3e5f76fc96322c17 OP_EQUALVERIFY OP_CHECKSIG",
addresses: [
"t1HuRjZxt36NXrwCujdUmvqZnaTA2jhsxus"
],
type: "pubkeyhash"
},
spentTxId: null,
spentIndex: null,
spentHeight: null
},
{
value: "3199.23055452",
n: 1,
scriptPubKey: {
hex: "76a914137ce77488fc0ff58fee1da6b5f41adb3109458188ac",
asm: "OP_DUP OP_HASH160 137ce77488fc0ff58fee1da6b5f41adb31094581 OP_EQUALVERIFY OP_CHECKSIG",
addresses: [
"t1KeeUUGLPE29reLbJb7vATKX4UjnPivbyi"
],
type: "pubkeyhash"
},
spentTxId: null,
spentIndex: null,
spentHeight: null
}
],
vjoinsplit: [ ],
blockhash: "0000000000ce9667ee7be4e4add9106fdb70aec99dcfaeaee344c70926e4f7b0",
blockheight: 655192,
confirmations: 51,
time: 1576222322,
blocktime: 1576222322,
valueOut: 3209.22955452,
size: 245,
valueIn: null,
fees: null,
fOverwintered: true,
nVersionGroupId: 2301567109,
nExpiryHeight: 655232,
valueBalance: 0,
spendDescs: [ ],
outputDescs: [ ]
}