Error 3050003 assertion failure with message: overdrawn balance

执行

eos.transfer({
    from: 'dapp.exec',
    to: 'eosio',
    quantity: '99999973.8056 EOS',
    memo: 'hello world'
        }).then(console.log)
    .catch(e => {
        console.error(e);
    })

返回

eos.js:18306 Error: {"code":500,"message":"Internal Service Error","error":{"code":3050003,"name":"eosio_assert_message_exception","what":"eosio_assert_message assertion failure","details":[{"message":"assertion failure with message: overdrawn balance","file":"wasm_interface.cpp","line_number":930,"method":"eosio_assert"},{"message":"","file":"apply_context.cpp","line_number":62,"method":"exec_one"}]}}

原因：账户余额小于要转的金额