File Content Conversion works in FileAdapter But not in SFTP

Hello SAP PI gurus

I am working on a scenario that needs file content conversion. The sender channel is an SFTP channel.

For testing purpose I tried using FILE adapter and the content coversion worked without any problem.

However when I tried using the same file content conversion parameters with SFTP, it is failing with the following error after picking up the file.

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Exception
received: java.lang.ArrayIndexOutOfBoundsException: while trying to load from
index -1 of an object array with length 452, loaded from field
java.util.ArrayList.elementData of an object loaded from local variable 'this'

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I am using the same exact payload also.

I have attached the screen shot of the File Content Conversion Settings and the sample payload.

Any suggestiongs or recommendations will be highly appreciated.

JFYI : I am using PI 7.4

Thanks
Ram