Unfortunately, the file poses a problem for basic unzipping software (e.g. a file explorer). However, the file is 100% valid with respect to the ZIP specificati

Unfortunately, the file poses a problem for basic unzipping software (e.g. a file explorer). However, the file is 100% valid with respect to the ZIP specification. You just need to use "true" unzipping software like 7zip, unzip etc. to read it as such.