[MM-31573] update log levels for the app package (#16629)

* update log levels for the app package

* reflect review comments

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/import_functions.go

@@ -530,11 +530,13 @@ func (a *App) importUser(data *UserImportData, dryRun bool) *model.AppError {
 	if data.ProfileImage != nil {
 		file, err := os.Open(*data.ProfileImage)
 		if err != nil {
-			mlog.Error("Unable to open the profile image.", mlog.Any("err", err))
+			mlog.Warn("Unable to open the profile image.", mlog.Err(err))
 		}
 		defer file.Close()
-		if err := a.SetProfileImageFromMultiPartFile(savedUser.Id, file); err != nil {
-			mlog.Error("Unable to set the profile image from a file.", mlog.Any("err", err))
+		if err == nil {
+			if err := a.SetProfileImageFromMultiPartFile(savedUser.Id, file); err != nil {
+				mlog.Warn("Unable to set the profile image from a file.", mlog.Err(err))
+			}
 		}
 	}