install Metl for first time on windows

[marina-saad]

after entering this command ./gradlew assemble this message shows up
FAILURE: Build failed with an exception.

• Where:
  Build file 'C:\Users\Marina\metl\metl-war\build.gradle' line: 3

• What went wrong:
  A problem occurred evaluating project ':metl-war'.

Lorg/gradle/api/provider/PropertyState;

I tried to skip the build step and downloaded a metl.war version and run it and the metl design workplace opens but I can not open any component in it I want to know what are the steps I missed in to have this issue?

[nrichardson99]

Start Metl using the war file.
After it starts connect via a web browser, then select the 'Admin' tab at the top.
Next choose 'Plugin Repositories' from the menu on the left.
Select 'central' click Edit.
Update the Url to be https://repo1.maven.org/maven2
(use https not http)
Close the Edit Repository tab and then Restart Metl (kill your process and then restart)
Now see if the components are working.