sharepoint online – Unable to create sharepointlist from excel data due to json parse error

I was trying to create sharepointlist from excel data, I have around 600-ish rows and 250-ish columns. I get the error
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Then I tried to feed the data less then 250 columns, strangely it works. I tried to examine the data exchange between browser and the cloud, but I have no clue what was happen.
What could this possibly the problem?