/usr/lib/jvm/java-9-openjdk-9.0.0.181-1.fc26.x86_64/bin/jar --file=jboss-el-api_3.0_spec-1.0.10.Final.jar --describe-module
Unable to derive module descriptor for: jboss-el-api_3.0_spec-1.0.10.Final.jar
jboss.el.api.3.0.spec: Invalid module name: '3' is not a Java identifier

Basically identical problem as https://github.com/jboss/jboss-transaction-api_spec/pull/5