Unable to initialize the API: undefined is not a function

[jordy25519]

reports of 1.4.0 release being unable to connect with mainnet

Unable to initialize the API: undefined is not a function

Debugging shows this line may be the cause
https://github.com/polkadot-js/api/blob/033cba718d31e8bbd8b90ece99b7e9e6a7db579d/packages/api/src/base/Init.ts#L250

    const metadataKey = `${this._genesisHash?.toHex() || '0x'}-${runtimeVersion.specVersion.toString()}`;

[KarishmaBothara]

Interestingly... on the UI branch which uses latest CENNZnet API 1.4.0, I am able to connect to mainnet Azalea (v39) as well as Nikau(40)

[jordy25519]

Seems to be occurring on Sylo android device

[jordy25519]

could be solved by managing our own po[l|n]yfills i.e #325