Play framework is missing a lot of libraries, an error example from lightbend rest-api example:
Description Resource Path Location Type Project ‘play-java-rest-api-example’ is missing required library: ‘/root/.cache/coursier/v1/https/repo1.maven.org/maven2/antlr/antlr/2.7.7/antlr-2.7.7.jar’ play-java-rest-api-example Build path Build Path Problem
Project ‘play-java-rest-api-example’ is missing required library: ‘/root/.cache/coursier/v1/https/repo1.maven.org/maven2/aopalliance/aopalliance/1.0/aopalliance-1.0.jar’ play-java-rest-api-example Build path Build Path Problem
Project ‘play-java-rest-api-example’ is missing required library: ‘/root/.cache/coursier/v1/https/repo1.maven.org/maven2/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar’ play-java-rest-api-example Build path Build Path Problem
Those are 3 of 139 errors