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I am working on a ethereum dapp and am struck with the following errors, concerned code pieces have been attached.

App.js

  async loadBlockchainData() {
    const web3 = window.web3
    const networkId = await web3.eth.net.getId()
    const networkData = DStock.networks[networkId]
    if(networkData) {
      const dstock = new web3.eth.Contract(DStock.abi, networkData.address)
      this.setState({ dstock })
     
     //const myId = await dstock.getMyId[this.state.account].call().call()
     const myId  = await dstock.methods.getMyId[this.state.account].call()
    }

Solidity code

mapping (address=> uint256) public getMyId;

Error recieved

Unhandled Rejection (TypeError): Cannot read property '0x14677494C6Dc1E83122A942E07fE79C3cba33D27' of undefined

and

Unhandled Rejection (TypeError): Cannot read property 'call' of undefined

respectively on uncommenting the last two lines of the javascript code

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