CSV Reader Error on Knime Server

I have a work flow on desktop version that executes and gives me the desired output. When i try to copy the workflow on server and run it using webportal, i get a "CSV Reader"  error message.  I am using a quick form node "Create temp dir", "CSV Writer" and "File Download" nodes to output results on server. 

I am reading data using database reader nodes and there is no CSV reader in my entire workflow. 

Can some one help me understand the error message and possibly a solution to fix the issue.