change package name,fixes error

src/main/java/com/onekeycall/videotablet/config/CommonConfig.java

@@ -0,0 +1,14 @@
+package com.onekeycall.videotablet.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+@Configuration
+public class CommonConfig {
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}