Error. java.lang.RuntimeException: main$JavaCompileException: ECJ returned errors. ---------- 1. ERROR in /root/JavaX-Caches/Temp/1734918358147/m1021287.java (at line 550) if (((Collection) strings).size() == 1) return first(((Collection) strings)); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Type mismatch: cannot convert from Object to String ---------- 1 problem (1 error) Options: /root/JavaX-Caches/Temp/1734918358147/m1021287.java -cp /root/.javax/x30.jar:/root/.javax/x30.jar -warn:none -source 11 -target 11 -d /root/JavaX-Caches/Temp/1734918358160