No warning/error appears when importing a CSV with multiple columns with the same name

[tudoramariei]

When trying to upload a CSV with multiple columns using the same name, the table is created with all the columns up to the second same-named column. An error is displayed, but it doesn't help the user figure out what happened.

Expected:

1. A user tries to upload a table that has two columns named "phone"
2. When pressing continue, the two identical columns are highlighted

Actual:

1. A user tries to upload a table that has two columns named "phone"
2. When pressing continue, an error is displayed: Something went wrong
   • in the background, the table has been created
   • the new table has all the columns up to the second same-named column
3. When pressing continue a second time, a different error is displayed: This table name is already being used

Sample CSV: sample.csv

Screenshot of the first press of Continue:

Screenshot of the second press of Continue:

Screenshot of the table structure: