can someone please explain what i did wrong, or what i need to fix...my host for my cache.zip file is 000webhost do i need a different one? this is what my .bat file shows when client says "Error loading...Please report!"

Code:
 SERVER is loading..
java.util.zip.ZipException: error in opening zip file
        at java.util.zip.ZipFile.open(Native Method)
        at java.util.zip.ZipFile.(init)(Unknown Source)
        at java.util.zip.ZipFile.(init)(Unknown Source)
        at Update.unZipFile(Update.java:53)
        at Update.(init)(Update.java:29)
        at client.streamLoaderForName(client.java:4750)
        at client.startUp(client.java:8772)
        at RSApplet.run(RSApplet.java:33)
        at client.run(client.java:6035)
        at java.lang.Thread.run(Unknown Source)