Course 2 Assignment 3 help

[sohan_madhana]

I am having trouble doing the assignment 3. I tried the lab once and failed to achieve 80% score, so started doing 2nd time but now it is not allowing me to redo.
DataContextError is raised when I try to create a datasource.

Please suggest how should I resolve it.
Thank you in advance.

[Amir_Zare]

Hello @sohan_madhana
Was the context variable successfully created in step 2.1? This seems like a problem with that variable.