Error installing Brightcove-Player-Core

[jrdesigner13]

yarn add...
added the source in the podfile
source 'https://github.com/brightcove/BrightcoveSpecs.git'
pod install && pod update
show me this error :
[!] Error installing Brightcove-Player-Core
[!] /usr/bin/git clone https://github.com/brightcove/brightcove-player-sdk-ios.git /var/folders/c2/dntp_m_s2ml2x3z6vy82qhxc0000gn/T/d20201005-2234-g0ygl7 --template= --single-branch --depth 1 --branch v6.7.1

Cloning into '/var/folders/c2/dntp_m_s2ml2x3z6vy82qhxc0000gn/T/d20201005-2234-g0ygl7'...
error: RPC failed; curl 18 transfer closed with outstanding read data remaining
fatal: the remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed