I accidently created two columns with same name and data type in the table without any notification / issue.
The the server code found the issue when the second column is used
TypeError: 'NoneType' object is not subscriptable (key 'name')
https://anvil.works/build#clone:N5ZOMFC6QD335HI2=DO7DETDADTHNGUAAKOWK6QZS