Techtalks: Traveltech

In Tableau I received the following error message:

The Google BigQuery service was unable to compile the query. Name Field1 is ambiguous inside Custom SQL Query at [62:33]

My BQ Query seems to work fine in BQ, but when copy paste in Tableau the above error shows. In order for me to track the error, I want to understand the error message.

What does [62:33] refer to? My query is only 47 lines of code, so I can't really seem to grasp the meaning of this notation...