jdownloader keeps stopping in the middle of the download

i'm trying to download the video linked below. The address was copied from cococut video downloader extension for chrome.

it's from a streaming website https://watchseriesstream.com

and it downloads fine for the first half of the movie, but then it stops as shown in the screencap below.

https://imgur.com/UDt8993

what is the problem here? the actual streaming link is below

https://f19.megacdn.co:2228/v3-hls-playback/44edf840257a17d8c4f1c6ba64d3f2d59df5424a1fdbf5814c7a69a1e1ffe3f0c64b261a62504625322cd457e3cc74b711195099834b0d2ffad79e59e6c7396f00b2df70c11ae76aed476d80452839933cfdcead7d3ac475c56887d640dc2135ee7ceede690136673298c1db4d9af31a89a22cdfd47d43db674f48de21b66663bb70984697b11f6208720cd1ef6bb687dbc5bbf7ea60c2e43d25507ad633fe301609c543d8f3efd38b9748f7ee2c07ef4c201c677d1590ead14f56384e3be8f590937cb7350831d1c598a9633eb6005be401729cae8adc02534ecf0e614d15ac/1080/index.m3u8