Error while deploying GWT Project on GAE server

Hi,

When I am trying to deploy my GWT Project on GAE server (web hosting),
I am getting the following error in console:

Compiling module com.atos.VisitorRegistration
Validating newly compiled units
Ignored 1 unit with compilation errors in first pass.
Compile with -strict or with -logLevel set to TRACE or DEBUG to see
all errors.
Finding entry point classes
[ERROR] Errors in 'file:/D:/gwtproject/gwtws/
VisitorRegistrationSystem/src/com/atos/client/
VisitorRegistration.java'
[ERROR] Line 56: No source code is available for type
com.atos.db.DBUtil; did you forget to inherit a required module?
[ERROR] Unable to find type
'com.atos.client.VisitorRegistration'
[ERROR] Hint: Previous compiler errors may have made this
type unavailable
[ERROR] Hint: Check the inheritance chain from your module;
it may not be inheriting a required module or a module may not be
adding its source path entries properly
Exception in thread "UnitWriteThread" java.lang.RuntimeException:
Unable to read from byte cache
at
com.google.gwt.dev.util.DiskCache.transferToStream(DiskCache.java:196)
at
com.google.gwt.dev.util.DiskCacheToken.writeObject(DiskCacheToken.java:
91)
at sun.reflect.GeneratedMethodAccessor25.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown
Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown
Source)
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at com.google.gwt.dev.javac.PersistentUnitCache
$UnitWriter.run(PersistentUnitCache.java:226)
Caused by: java.io.IOException: Read error
at java.io.RandomAccessFile.read(Native Method)
at java.io.RandomAccessFile.readInt(Unknown Source)
at
com.google.gwt.dev.util.DiskCache.transferToStream(DiskCache.java:183)
... 14 more



Please suggest, what could be the issue?

Thanks,
Vikash

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