Beginner go error cannot use'\ u0000' (type rune) as type string

package main

 import (
     "github.com/tealeg/xlsx"
 )

 func main() {
     file, err := xlsx.OpenFile("./Workbook.xlsx")
     if err != nil {
         panic(err)
     }
     first := file.Sheets[0]
     row := first.AddRow()
     row.SetHeightCM(1)
     cell := row.AddCell()
     cell.Value = "1"
     cell = row.AddCell()
     cell.Value = ""
     cell = row.AddCell()
     cell.Value = ""
     cell = row.AddCell()
     cell.Value = "18"

     err = file.Save("./Workbook.xlsx")
     if err != nil {
         panic(err)
     }

 }
Golang
Apr.07,2021
The

string is in double quotes, and the single quotation mark is of type rune

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3bc7d-3466f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3bc7d-3466f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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