为什么我得到一个令牌逗号预期错误时，试图拉在这个文件?

Question

我得到一个"Token, expected"错误。它突出显示了"

let
Source = Excel.CurrentWorkbook(File.Contents("C:UsersarrowDropbox (Arrow Academy)BILLINGMEDICAID1TM - EE MA Numbers for Billing TEST.xlsx"){[Name="Table1"]}[Content],
#"Changed Type" = Table.TransformColumnTypes(Source,{{"MA#-INITIALS", type text}, {"FIRST NAME", type text}, {"LAST NAME, FIRST NAME", type text}, {"MA SPECIALTY", type text}, {"POSITION", type text}, {"INITIALS", type text}, {"INITIALS2", type text}}) 
in
#"Changed Type"

Answer 1

Source = Excel.CurrentWorkbook(File.Contents("C:UsersarrowDropbox (Arrow Academy)BILLINGMEDICAID1TM - EE MA Numbers for Billing TEST.xlsx")){[Name="Table1"]}[Content],

Excel.CurrentWorkbook()未闭合