java.io.UTFDataFormatException
at java.io.ObjectOutputStream$BlockDataOutputStream.writeUTF(ObjectOutputStream.java:2164)
This states that the application is unable to virtualize the object as the content can be too large to process.
Solution:
The issue is due to the large amount of data. so kindly remove the description field from the report and try to generate the report once.
If the above is not suitable kindly reduce the character limit of the description field to 5000 or 1000 Under Admin>>Performance Settings >>Report.
NOTE: By default, the value will be set as 100000.