Hi Samhith,
I have tested on my local environment and can't reproduce the issue, please check and test as below to provide us more details information due to this error message:
- Did you get the same issue when you don't insert the image from the DB?
Please close the designer and reopen to design an new report the same as this one to see if the issue persist - Please try to design the same report in report builder to see if you will get the same issue
- Please deploy the report to report server to have a test.
If the restart of the designer and the recreate of the report didn't help, this error may relatted to the WCF, please try to add below code in the web.config file in the path like:
C:\Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVER\Reporting Services\ReportServer
C:\Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVER\Reporting Services\ReportManager
<behaviors>
<endpointBehaviors>
<behavior name="ServiceBehavior">
<dataContractSerializer maxItemsInObjectGraph="2147483647"/>
</behavior>
</endpointBehaviors>
</behaviors>
If you still have any problem, please feel free to ask.
Regards,
Vicky Liu