environment：

System:                   winserver 2008 R2 enterprise

joget version:         V6.0.8 enterprise

java:                         jre1.8.0_181      x64 bit

joget start bat:        set JAVA_OPTS=-XX:MaxPermSize=256m -Xmx2048M -Xdebug -Dwflow.home=./wflow/ -XX:+UseConcMarkSweepGC -javaagent:./wflow/aspectjweaver-1.8.5.jar

database:                mariadb-10.3.8-winx64 

Form field setting:  two fileupload fields ，file1 and file2 ， Mandatory

The server is place in IDC , if I  visit joget app by "localhost:8080/jw/******" on the server,it is normal.

If I visit joget app from my office computer, for example, by the websit "www.myjoget.com:8080/jw/******",

After I upload file to file1 and file2, it looks like normal,as I click the save button，it break.

the file1 tips Missing required value and the file1's file has gone.