I get this error whenever I try to upload a log file. What is the problem?
ERROR : cannot concatenate 'str' and 'NoneType' objects
For me it happened because source csv file was generated with python without opening file with option newline=""
, so when I open it on for example Google Sheets, it looks like this:
Probably that empty rows are "NoneType".
UPD. Also, when I fixed empty rows, it still refused to upload file using Chrome on Windows. When I tried to do that using Firefox it was finally successful.
How are you uploading (I assume from the "Add Data" option from the launcher, or a similar method, and not from a UF)?
Does this happen with any file, and if not, what is in the file?
To me it happened with every file, and every file type.
Changing browser from Safari to Firefox fixed it.
No problem now. I just changed the file type to .log.
Was that a .csv file or a .log file with an incorrect file extension?