I am working with firebase and after getting data from firebase i added all the items in lists then convert them into row csv lists
Buy i m getting these two errors
Can anyone explain the reason and origin of these error
no one helped 
It would really help if you provided a screenshot of your relevant blocks, so we can see what you are trying to do, and where the problem may be.
To get an image of your blocks, right click in the Blocks Editor and select “Download Blocks as Image”. You might want to use an image editor to crop etc. if required. Then post it here in the community.
Taifun
