handle all not found errors

api/controllers/mainCatalogController.js

@@ -8,11 +8,10 @@ module.exports.create = [
     if (!req.files || !req.files.pdf) return res.status(422).json({validation: {pdf: {msg: v_m['fa'].required.file}}})
     if (req.files.pdf.mimetype.split('/')[1] !== 'pdf') return res.status(422).json({validation: {pdf: {msg: v_m['fa'].file_types.pdf}}})
 
-
     MainCatalog.find({}, (err, catalogs) => {
+      if (err) console.log(err)
       if (catalogs.length) {
         let firstFile = catalogs[0]
-
         if (firstFile.file[req.body.locale]) fs.unlink(`./static/${firstFile.file[req.body.locale]}`, err => {
           if (err) console.log(err)
         })
@@ -24,8 +23,6 @@ module.exports.create = [
           req.files.pdf.mv(`./static/uploads/pdf/${req.body.locale}_${req.files.pdf.name}`)
           return res.json(firstFile)
         })
-
-
       } else {
         const data = {created_at: dateformat(Date.now(), 'yyyy-mm-dd HH:MM:ss'), file: {}}
         data.file[req.body.locale] = req.body.locale + '_' + req.files.pdf.name