add some log

src/main/java/org/fisco/solc/compiler/Solc.java

@@ -23,6 +23,7 @@ public Solc(boolean sm, Version version) {
             }
         } catch (IOException e) {
             logger.error(" Can't init solc compiler, e: ", e);
+            e.printStackTrace();
             throw new RuntimeException("Can't init solc compiler: ", e);
         }
     }

src/main/java/org/fisco/solc/compiler/SolidityCompiler.java

@@ -475,6 +475,7 @@ public static String runGetVersionOutput(boolean sm, Version version) throws IOE
         try {
             process.waitFor();
         } catch (InterruptedException e) {
+            e.printStackTrace();
             Thread.currentThread().interrupt();
             throw new RuntimeException(e);
         }