ERROR: Sizes in assignment must be the same

[Komari-Koshigaya]

// test.circom
include "../circomlib/circuits/bitify.circom";
include "../circomlib/circuits/escalarmulfix.circom";

template PublicKey() {
  signal private input in;
  signal output out[2];

  component privBits = Num2Bits(253);
  privBits.in <== in;

  var BASE8 = [
    5299619240641551281634865583518297030282874472190772894086521144482721001553,
    16950150798460657717958625567821834550301663161624707787222815936182638968203
  ];

  component mulFix = EscalarMulFix(253, BASE8);
  for (var i = 0; i < 253; i++) {
    mulFix.e[i] <== privBits.out[i];
  }

  out[0] <== mulFix.out[0];
  out[1] <== mulFix.out[1];
}

component main = PublicKey();

I encountered the following problem, when I try to execute circom test.circom --r1cs --wasm --sym to compile the circuit above.

test.circom:11,2-14,3   Sizes in assignment must be the same
{
 "type": "OP",
 "op": "=",
 "values": [
  {
   "type": "DECLARE",
   "declareType": "VARIABLE",
   "name": {
    "type": "VARIABLE",
    "name": "BASE8",
    "selectors": [],
    "first_line": 11,
    "first_column": 6,
    "last_line": 11,
    "last_column": 11
   },
   "first_line": 11,
   "first_column": 2,
   "last_line": 11,
   "last_column": 11,
   "refId": 3
  },
  {
   "type": "ARRAY",
   "values": [
    {
     "type": "NUMBER",
     "value": "5299619240641551281634865583518297030282874472190772894086521144482721001553",
     "first_line": 12,
     "first_column": 4,
     "last_line": 12,
     "last_column": 80
    },
    {
     "type": "NUMBER",
     "value": "16950150798460657717958625567821834550301663161624707787222815936182638968203",
     "first_line": 13,
     "first_column": 4,
     "last_line": 13,
     "last_column": 81
    }
   ],
   "first_line": 11,
   "first_column": 14,
   "last_line": 14,
   "last_column": 3
  }
 ],
 "first_line": 11,
 "first_column": 2,
 "last_line": 14,
 "last_column": 3
}

=========== environment ===========
circom: 0.5.45
node: V14.15.0