Invalid Content ID error

// Getting below error after uploading input file

//Expression evaluation error [evaluation ID = a2059:3adce] in rule 'cb_headervalidation' (called by rule 'cb_fileupload_ui') : com.appiancorp.suiteapi.content.exceptions.InvalidContentException: Invalid Content ID

a!fileUploadField(
label: "Upload Star Details File",
labelPosition: "ABOVE",
target:cons!CB_UPLOADED_DOC,
maxSelections:1,
value:ri!starDoc,
saveInto: ri!starDoc,
required:true(),
validations:
if(
isnull(ri!starDoc),
"",
{
rule!CB_HeaderValidation(document:ri!starDoc, headers:cons!CB_STARDETAILS_HEADERS),
{
if(
fv!files.name = "StarDetails",
"",
"Incorrect file name, Please upload the StarDetails File"
),
if(
fv!files.extension = "xlsx",
"",
"File extension should be .xlsx"
)
}
}
)
),

Rule Header validation:

a!localVariables(
local!columnHeaders:
readexcelsheetpaging(
excelDocument: ri!document,
sheetNumber: 0,
pagingInfo: a!pagingInfo(startIndex: 1, batchSize: 1)
)
,
local!temp: local!columnHeaders.data,
local!columnHeaderList: remove(
local!temp[1].values,
wherecontains(
"",
touniformstring({ local!temp[1].values })
)
),
local!headerValidation: a!forEach(
items: local!columnHeaderList,
expression: toboolean(fv!item = ri!headers[fv!index])
),
if(
contains(local!headerValidation, false()),
"InCorrect Columns Header Sequence/Names, Correct Column Sequence/Names are " & ri!headers,
{}
)
)