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.