Sloeber 4.4 missing build.opt on Windows

[GreyCon]

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Describe your environment
Do you use the Sloeber product or plugin? Sloeber Product for Windows
Sloeber version number 4.4.1
OS: [e.g. windows 10] Windows 10
The url of the json that you used to download the platform
A image of the project properties arduino showing the board settings

Describe the bug
Installed on Windows. No other Eclipse installed. Created a new ESP8266 project, which fails to compile, complaining about a missing build.opt file

To Reproduce
Steps to reproduce the behavior:
Install 4.4.1 on windows
Add support for ESP8266, 3.12
Create new empty Arduino project for ESP8266, and build.

provide the name of the board and the platform version you are using.
Provide the json url and a screenshot of project properties->arduino

Expected behavior
A clear and concise description of what you expected to happen.

Data to back up your claim
If applicable, add screenshots, console output and/or logs to help explain your problem.

Additional context
Add any other context about the problem here.

[GreyCon]

Found a solution to this one: esp8266/Arduino#8803

[jantje]

Cool you found a solution yourself 👍