fix: 🐛 sync, XMLHttp error

[hzz780]

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[github-actions]

🔴 Total coverage is lower than the default branch

Lines	Branches	Functions	Statements
99.00% (-0.41%)	98.21% (-0.64%)	99.05% (+0.03%)	99.04% (-0.40%)

Detailed report

click to open the diff coverage report

	File	Lines	Branches	Functions	Statements
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✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/chain/chainMethod.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/chain/index.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/contract/contractMethod.js	99.15% (+99.15%)	97.22% (+97.22%)	100.00% (+100.00%)	99.15% (+99.15%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/contract/index.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/bloom.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/errors.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/formatters.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/httpProvider.js	93.96% (+93.96%)	91.04% (+91.04%)	92.00% (+92.00%)	94.06% (+94.06%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/keccak.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/keyStore.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/merkleTree.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/proto.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/requestManage.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/settings.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/sha256.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/transform.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/util/utils.js	99.10% (+99.10%)	98.21% (+98.21%)	100.00% (+100.00%)	99.15% (+99.15%)
✅	/home/runner/work/aelf-web3.js/aelf-web3.js/src/wallet/index.js	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)	100.00% (+100.00%)