not downloading

[anshulgupta5102002]

C:\Users\piyush\Desktop\start day\narrowvine-reborn-master\narrowvine-reborn-master>narrowvine_reborn.py -mpd https://d1z78r8i505acl.cloudfront.net/media/iekblUlcv9Kld/f71413cb/stream.mpd -lic https://license.vdocipher.com/auth/wv/:eyJvdHAiOiIyMDE2MDMxM3ZlcnNBU0UzMjNqdUtDZDVSeHFmRFFQWDk0cG5uZml0TWoyZ285U1RaUFV5bHNHdnZoenFKOTdFIiwicGxheWJhY2tJbmZvIjoiZXlKMmFXUmxiMGxrSWpvaU56WmxPR1V4WlRrMU5tSTVORE0yTlRobVlXRXhOemxoWldZMk5XWTRORFlpZlE9PSIsImhyZWYiOiJodHRwczovL3d3dy5zdHVkeWlxLmNvbS92aWRlby1wYWdlIiwidGVjaCI6Ind2IiwibGljZW5zZVJlcXVlc3QiOiJDQVE9In0= -o OUTPUT -f sep.mp4

**** NARROWVINE-REBORN by vank0n ****

[info] Entering Download Section

[info] Downloading Encrypted Video from CDN..
[generic] stream: Requesting header
[generic] stream: Downloading webpage
[generic] stream: Extracting information
[info] stream: Downloading 1 format(s): 3
[download] C:\Users\piyush\Desktop\start day\narrowvine-reborn-master\narrowvine-reborn-master\cache\encrypted_video.mp4 has already been downloaded
[download] 100% of 52.96MiB
[info] Downloading Encrypted Audio from CDN..
[generic] stream: Requesting header
[generic] stream: Downloading webpage
[generic] stream: Extracting information
[info] stream: Downloading 1 format(s): 1
[download] C:\Users\piyush\Desktop\start day\narrowvine-reborn-master\narrowvine-reborn-master\cache\encrypted_audio.m4a has already been downloaded
[download] 100% of 18.06MiB
[info] Attempting Widevine challenge...
[info] Getting Keys...
unable to parse license - check protobufs
[info] Found Key!
Traceback (most recent call last):
File "C:\Users\piyush\Desktop\start day\narrowvine-reborn-master\narrowvine-reborn-master\narrowvine_reborn.py", line 245, in
print ("[info] Decrypting Audio Using KEY: " + keysOnly(KEYS))
File "C:\Users\piyush\Desktop\start day\narrowvine-reborn-master\narrowvine-reborn-master\narrowvine_reborn.py", line 176, in keysOnly
return key
UnboundLocalError: local variable 'key' referenced before assignment

[astravaganza]

unable to parse license - check protobufs

this is the problem