The uploaded file was not imported because it is missing timestamps.

Have uploaded previously with same file format without any problems – most recent upload (2 Feb 26) fails with message
The uploaded file was not imported because it is missing timestamps.
It seems to conform to the template, first few lines attached (which fail to load) but I have 5 months data to upload in same format. Have tried with all field names and ,,,,,,,, appended, but same result
created_at,field1,field2,field3,field4
2025-09-01T23:55:37+00:00,6.365,-5.895,0,304.96
2025-09-02T23:55:38+00:00,6.355,-5.898,11.51,316.47
2025-09-03T23:55:41+00:00,6.34,-5.903,6.81,323.28Have uploaded previously with same file format without any problems – most recent upload (2 Feb 26) fails with message
The uploaded file was not imported because it is missing timestamps.
It seems to conform to the template, first few lines attached (which fail to load) but I have 5 months data to upload in same format. Have tried with all field names and ,,,,,,,, appended, but same result
created_at,field1,field2,field3,field4
2025-09-01T23:55:37+00:00,6.365,-5.895,0,304.96
2025-09-02T23:55:38+00:00,6.355,-5.898,11.51,316.47
2025-09-03T23:55:41+00:00,6.34,-5.903,6.81,323.28 Have uploaded previously with same file format without any problems – most recent upload (2 Feb 26) fails with message
The uploaded file was not imported because it is missing timestamps.
It seems to conform to the template, first few lines attached (which fail to load) but I have 5 months data to upload in same format. Have tried with all field names and ,,,,,,,, appended, but same result
created_at,field1,field2,field3,field4
2025-09-01T23:55:37+00:00,6.365,-5.895,0,304.96
2025-09-02T23:55:38+00:00,6.355,-5.898,11.51,316.47
2025-09-03T23:55:41+00:00,6.34,-5.903,6.81,323.28 upload, timestamp MATLAB Answers — New Questions

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