Cannot bulk load because the file "C:\NYCTaxiData\trip_data" could not be opened

1) I have 12 CSV about NYC Taxi data in the C:\NYCTaxiData\trip_data.

2) I have created trip_data table to Azure SQL.

3) I have added Bulk Insert to SSIS. (login with local admin) It should connect to trip_data folder.

4) When I execute SSIS I get following error.

5) I try to also do execute directly in  SQL Studio, but error is same. (login with sql user)

BULK INSERT SiiliDemoSQLDB.dbo.trip_data  
   FROM 'C:\NYCTaxiData\trip_data'  
   WITH  
     (  
        FIELDTERMINATOR ='Tab',  
        ROWTERMINATOR = ':\n'
      ); 

Question:Why error occurs? How to solve

Error: 0xC002F304 at Bulk Insert Task Trip_data, Bulk Insert Task: An error occurred with the following error message: "Cannot bulk load because the file "C:\NYCTaxiData\trip_data" could not be opened. Operating system error code (null).".
Task failed: Bulk Insert Task Trip_data

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Kenny_I