Why do I get I/O syntax error in Obejct module when running with a .tws file

Q: I was trying to run the Object module and got this error: 
in: read_timehisotry_windsim

...

forrtl: severe (59): list-directed I/O syntax error, unit -5, file Internal List-Directed Read

A: This error occurs due to incorrect formatting of the .tws file. Make sure to verify if any data is missing from certain records. To resolve this issue, you can consider filling in the missing data with a negative value like -1.