fail to build with "UNCAUGHT EXCEPTION" The AssemblyScript compiler crashed when compiling this file:

[ziyiyu]

When I try to run the build command, I get the following error

UNCAUGHT EXCEPTION: Error: The AssemblyScript compiler crashed when compiling this file: 'src\gravatar-registry.ts'
Suggestion: try to comment the whole file and uncomment it little by little while re-running the graph-cli until you isolate the line where the problem happens.

I followed the Suggestion to locate the offending code:

  let id = Bytes.fromBigInt(event.params.id);
  let gravatar = new Gravatar(Bytes.fromBigInt(event.params.id));

The complete code is as follows

import {
  NewGravatar as NewGravatarEvent,
  UpdatedGravatar as UpdatedGravatarEvent
} from "../generated/GravatarRegistry/GravatarRegistry"
import { Gravatar} from "../generated/schema"
import { Bytes } from '@graphprotocol/graph-ts'

export function handleNewGravatar(event: NewGravatarEvent): void {
  let id = Bytes.fromBigInt(event.params.id);
  let gravatar = new Gravatar(Bytes.fromBigInt(event.params.id));
  // gravatar.owner = event.params.owner
  // gravatar.displayName = event.params.displayName
  // gravatar.imageUrl = event.params.imageUrl

  // gravatar.blockNumber = event.block.number
  // gravatar.blockTimestamp = event.block.timestamp

  // gravatar.save()
}

the event：
event NewGravatar(uint id, address owner, string displayName, string imageUrl);

type Gravatar @entity(immutable: false) {
  id: Bytes!
  owner: Bytes! # address
  displayName: String! # string
  imageUrl: String! # string
  blockNumber: BigInt!
  blockTimestamp: BigInt!
  transactionHash: Bytes!
}

If I change the code to look like this，it will build success；
let gravatar = new Gravatar(event.params.owner);

The error message does not contain any critical information. What should I do？