Input data: "You have found a bug. The pipe has ended"

[Josephine04]

I'm connecting to snowflake and trying to input data into my Alteryx workflow.

I feel like I've connected successfully, as my connection preview shows my Snowflake data loading in correctly:

However when I go to input data and run my workflow it throws up an error:

I'm a first time user of Alteryx... So any help or guidance would really be really appreciated!