Not extracting with mac / Android 4

[JPWayne]

Hello, there! I have a problem backing up my WhatsApp on my MacBook. I have a Android 4 device. It is working with a windows PC, I can perfectly run the Backup Process there, but on my Macbook this occurs:

Last login: Tue May 21 17:19:30 on ttys000
isso:~ patrickl$ /Users/patrickl/Downloads/WhatsApp-Key-DB-Extractor-master-2/WhatsAppKeyDBExtract.sh

=========================================================================
= This script will extract the WhatsApp Key file and DB on Android 4.0+ =
= You DO NOT need root for this to work but you DO need Java installed. =
= If your WhatsApp version is greater than 2.11.431 (most likely), then =
= a legacy version will be installed temporarily in order to get backup =
= permissions. You will NOT lose ANY data and your current version will =
= be restored at the end of the extraction process so try not to panic. =
= Script by: TripCode (Greets to all who visit: XDA Developers Forums). =
= Thanks to: dragomerlin for ABE and to Abinash Bishoyi for being cool. =
= ### Version: v4.7 (12/10/2016) ### =

Please connect your Android device with USB Debugging enabled:

cannot connect to daemon at tcp:5037: Connection refused

• daemon not running; starting now at tcp:5037
• daemon started successfully
  /Users/patrickl/Downloads/WhatsApp-Key-DB-Extractor-master-2/WhatsAppKeyDBExtract.sh: line 57: [: -eq: unary operator expected

Downloading legacy WhatsApp 2.11.431 to local folder

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0Warning: Failed to create the file tmp/LegacyWhatsApp.apk: Not a directory
100 251 100 251 0 0 2668 0 --:--:-- --:--:-- --:--:-- 2670
curl: (23) Failed writing body (0 != 251)

WhatsApp 2.19.128 installed

Backing up WhatsApp 2.19.128
/data/app/com.whatsapp-2.apk: 1 file p...d. 2.7 MB/s (25140140 bytes in 8.979s)
Backup complete

Installing legacy WhatsApp 2.11.431
Performing Push Install
adb: error: cannot stat 'tmp/LegacyWhatsApp.apk': Not a directory
rm failed for -f, No such file or directory
Install complete

adb: backup unable to create file 'tmp/whatsapp.ab': Not a directory
Operation failed

Downloading WhatsApp 2.19.128 to local folder

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0Warning: Failed to create the file tmp/com.whatsapp-2.apk: Not a directory
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (23) Failed writing body (0 != 7751)

Restoring WhatsApp 2.19.128
Performing Push Install
adb: error: cannot stat 'tmp/com.whatsapp-2.apk': Not a directory
rm failed for -f, No such file or directory
Restore complete

Cleaning up temporary files ...
rm: tmp/whatsapp.ab: Not a directory
rm: tmp/whatsapp.tar: Not a directory
rm: tmp/apps: Not a directory
rm: tmp/com.whatsapp-2.apk: Not a directory
Done

Operation complete

Please press Enter to quit...

Maybe someone could help, would be very grateful!