Getting import error when attempting to import files into sql server via deployed ssis package

I have created an SSIS package that import text and excel file from a central network location into tables on an SQL Server 2016 .  It execute flawlessly using the sql Data tools 2015. I then deployed the the project to the sql server.  The deployment went fine.  However, when I try to execute the import package I get the following error.  I've also attached the error report. I've checked the files and they are not open.  The Sql Server has been given the permissions to the file folder in question.  Just to cross my t's and dot my i, what types of permission does the sql server need in order to import files from a network location

RPS Import:Error: SSIS Error Code
DTS_E_OLEDBERROR. An OLE DB error has occurred.
Error code: 0x80004005.
An OLE DB record is available. Source: "Microsoft Access
Database Engine" Hresult: 0x80004005 Description: "The
Microsoft Access database engine cannot open or write to
the file '\\Bfs\departments\CORPORATE\DQM\ONLINE
RPS TEST DATA\Online BCM Tool Files\6. Change
Report Type\Change Report Type.xlsx'. It is already
opened exclusively by another user, or you need
permission to view and write its data.".