PI24 install problem

[stijngeluk]

when I try to install my PI24 on my raspberry 3B+ i get this as output:

pi@raspberrypi:~ $ sudo bash -c "$(wget -O - ...)"
--2018-04-21 16:28:32-- ...
Resolving ... (...)... 52.216.132.133
Connecting to ... (...)|52.216.132.133|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1301 (1.3K) [application/x-sh]
Saving to: 'STDOUT'

- 100%[===================>] 1.27K --.-KB/s in 0.001s

2018-04-21 16:28:33 (1.76 MB/s) - written to stdout [1301/1301]

Hit:1 ... stretch InRelease
Hit:2 ... stretch InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
dirmngr is already the newest version (2.1.18-8~deb9u1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
gpg: keyserver receive failed: No keyserver available

Can somebody help?

[Oblivian]

Run the manual command found here (search keyserver within post)

https://forum.flightradar24.com/showthread.php?p=74851

And also Sudo apt-get update
Sudo apt get upgrade before installing fr24

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