Error of Cross SDK; throw Error but not return error:1

[todo]

aelf-web-wallet/app/web/js/utils/crossChain.js

Lines 137 to 142 in 55ce713

	// TODO: Error of Cross SDK; throw Error but not return error:1
	async receive(params) {
	const isReadyToRecevie = await this.isChainReadyToReceive(params);
	if (isReadyToRecevie.error) {
	throw Error(isReadyToRecevie.message);

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This issue was generated by todo based on a TODO comment in 55ce713 when #56 was merged. cc @AElfProject.