Update the import of the printer package

src/printer.py

@@ -1,5 +1,5 @@
-# Importing the module to mage the connection to the printer.
-from escpos.printer import Usb, USBNotFoundError
+# Importing the module to manage the connection to the printer.
+import escpos.printer as escp
 from time import sleep, gmtime, strftime
 import os.path
 from PIL import Image, ImageEnhance, ImageOps
@@ -66,8 +66,8 @@ class Printer(object):
             try:
                 # This also calls open(), which we need to close()
                 # or else the device will appear as busy.
-                p = Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
-            except USBNotFoundError as e:
+                p = escp.Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
+            except Exception as e:
                 self.app.logger.error(
                     "The USB device is not plugged in, trying again : " + str(e)
                 )