After the modified deployment errors

Openfire Openfire Dev
1

Openfire ran normallyin the eclipse After I modified and compile the openfire

but

I replaced startup.jar and openfire.jar in the running openfire , Openfire restart error:

java.lang.SecurityException: Invalid signature file digest for Manifest main attributes

at sun.security.util.SignatureFileVerifier.processImpl(Unknown Source)

at sun.security.util.SignatureFileVerifier.process(Unknown Source)

at java.util.jar.JarVerifier.processEntry(Unknown Source)

at java.util.jar.JarVerifier.update(Unknown Source)

How should I handle?

Thanks!