Deploy to Mobile Center returning EISDIR: illegal operation on a directory, read

I’m using “Deploy to Visual Studio Mobile Center” task in VSTS to deploy binary to Mobile Center. I have setup API access from VSTS to Mobile Center with the API key from Mobile Center with “Full Access”. I have set up App Slug correctly so I’m not sure what is the problem.

Here is the task output:

2017-07-31T13:04:07.3321637Z ##[section]Starting: Deploy to Visual Studio Mobile Center
2017-07-31T13:04:07.3321637Z ==============================================================================
2017-07-31T13:04:07.3321637Z Task         : Mobile Center Upload
2017-07-31T13:04:07.3321637Z Description  : Upload mobile app packages to Visual Studio Mobile Center
2017-07-31T13:04:07.3321637Z Version      : 0.119.1
2017-07-31T13:04:07.3321637Z Author       : Microsoft Corporation
2017-07-31T13:04:07.3331638Z Help         : Upload mobile app packages to Visual Studio Mobile Center
2017-07-31T13:04:07.3331638Z ==============================================================================
2017-07-31T13:04:09.1952666Z ##[error]Error: form-data: EISDIR: illegal operation on a directory, read
2017-07-31T13:04:09.3374890Z ##[section]Finishing: Deploy to Visual Studio Mobile Center

Please ask if you need any more info.

Thanks, Bojan

[bojanmisic]

It’s a dummy error message which can be related to a number of things. I admit I could have been a better open source contributor and write what was the original issue, but at that time it was a time pressured project and a really silly mistake which I can’t remember at the moment 😦. Apologies to everyone on the thread, but I agree with the above - the error message could be better!

[FlorisDevreese]

I had the same error message.

The error was on my side. In the build task I selected Select Release Notes File without specifying a valid Release notes file.

To be honest: The error message could be better. I lost about 20 minutes finding the source of this error…