各位专家好： 请帮分析一下原因及解决方法。 “2 error(s), 0 warning(s), and 0 message(s) detected: *** error *** Liquid viscosity correlation data is required but missing for component 4. *** error *** Transport property methods requiring certain pure component properties are specified, but those properties are not available for some components as listed above. Transport properties are only required for certain transport calculations such as column hydraulics, rate based distillation, rigorous heat exchangers and pipe unit operations. You may turn off transport calculations for this simulation if they are not being used. ” component 4:为2-丁炔-1,4-二醇（2-butyne-1,4-diol，C4H6O2,2BTYDIO）
