Server Start in Crash - An error occurred while checking server license key

Hello there I am getting this error when starting:

Aug 26 23:45:21 [txAdmin:WebCtxUtils] Executing "RESTART SERVER"
Aug 26 23:45:23 [txAdmin:FXRunner] >> [73] FXServer Started!
Aug 26 23:45:23
Aug 26 23:45:23 ================================================================
Aug 26 23:45:23 ======== FXServer starting - 8/26/2020, 9:45:23 PM
Aug 26 23:45:23 ================================================================
Aug 26 23:45:23 Creating script environments for _cfx_internal
Aug 26 23:45:23 Found new resource monitor in /app/code/alpine/opt/cfx-server/citizen//system_resources//monitor
Aug 26 23:45:23 Found new resource webadmin in /app/code/alpine/opt/cfx-server/citizen//system_resources//webadmin
Aug 26 23:45:23 Found new resource basic-gamemode in /app/data/server-data/resources//[gamemodes]/basic-gamemode
Aug 26 23:45:23 Found new resource baseevents in /app/data/server-data/resources//[system]/baseevents
Aug 26 23:45:23 Found new resource sessionmanager-rdr3 in /app/data/server-data/resources//[system]/sessionmanager-rdr3
Aug 26 23:45:23 Found new resource sessionmanager in /app/data/server-data/resources//[system]/sessionmanager
Aug 26 23:45:23 Found new resource scoreboard in /app/data/server-data/resources//[system]/scoreboard
Aug 26 23:45:23 Found new resource runcode in /app/data/server-data/resources//[system]/runcode
Aug 26 23:45:23 Found new resource hardcap in /app/data/server-data/resources//[system]/hardcap
Aug 26 23:45:23 Found new resource ■■■■■■■ in /app/data/server-data/resources//[system]/■■■■■■■
Aug 26 23:45:23 Found new resource playernames in /app/data/server-data/resources//[gameplay]/playernames
Aug 26 23:45:23 Found new resource chat-theme-gtao in /app/data/server-data/resources//[gameplay]/chat-theme-gtao
Aug 26 23:45:23 Found new resource chat in /app/data/server-data/resources//[gameplay]/chat
Aug 26 23:45:23 Found new resource fivem in /app/data/server-data/resources//[test]/fivem
Aug 26 23:45:23 Found new resource example-loadscreen in /app/data/server-data/resources//[test]/example-loadscreen
Aug 26 23:45:23 Found new resource mapmanager in /app/data/server-data/resources//[managers]/mapmanager
Aug 26 23:45:23 Found new resource spawnmanager in /app/data/server-data/resources//[managers]/spawnmanager
Aug 26 23:45:23 Found new resource fivem-map-skater in /app/data/server-data/resources//[gamemodes]/[maps]/fivem-map-skater
Aug 26 23:45:23 Found new resource fivem-map-hipster in /app/data/server-data/resources//[gamemodes]/[maps]/fivem-map-hipster
Aug 26 23:45:23 Found new resource redm-map-one in /app/data/server-data/resources//[gamemodes]/[maps]/redm-map-one
Aug 26 23:45:23 Found new resource yarn in /app/data/server-data/resources//[system]/[builders]/yarn
Aug 26 23:45:23 Found new resource webpack in /app/data/server-data/resources//[system]/[builders]/webpack
Aug 26 23:45:23 Creating script environments for sessionmanager
Aug 26 23:45:23 Started resource sessionmanager
Aug 26 23:45:23 Creating script environments for webadmin
Aug 26 23:45:23 Instantiated instance of script FxWebAdmin.BaseServer.
Aug 26 23:45:23 Instantiated instance of script FxWebAdmin.HttpServer+HttpServerScript.
Aug 26 23:45:24 Started resource webadmin
Aug 26 23:45:24 Creating script environments for monitor
Aug 26 23:45:24 [txAdminClientLUA] Version 2.4.0 starting...
Aug 26 23:45:24 [txAdminClientJS] Logger started
Aug 26 23:45:24 Started resource monitor
Aug 26 23:45:24 Creating script environments for mapmanager
Aug 26 23:45:24 Started resource mapmanager
Aug 26 23:45:24 Creating script environments for chat
Aug 26 23:45:24 Started resource chat
Aug 26 23:45:24 Started resource spawnmanager
Aug 26 23:45:24 Started gametype Freeroam
Aug 26 23:45:24 Started resource basic-gamemode
Aug 26 23:45:24 Started resource fivem
Aug 26 23:45:24 Creating script environments for hardcap
Aug 26 23:45:24 Started resource hardcap
Aug 26 23:45:24 Creating script environments for ■■■■■■■
Aug 26 23:45:24 Started resource ■■■■■■■
Aug 26 23:45:24 Started resource scoreboard
Aug 26 23:45:24 Authenticating server license key...
Aug 26 23:45:24 An error occurred while checking server license key: HTTP 403 - error code: 1020Stacktrace:
Aug 26 23:45:24
Aug 26 23:45:24 /proc/self/maps:
Aug 26 23:45:24 40f63000-40f73000 rwxp 00000000 00:00 0
Aug 26 23:45:24 41de6000-41ea6000 rwxp 00000000 00:00 0
Aug 26 23:45:24 41f34000-41fd4000 rwxp 00000000 00:00 0
Aug 26 23:45:24 373d1e40000-373d1e80000 rw-p 00000000 00:00 0
Aug 26 23:45:24 3a0a3940000-3a0a3980000 rw-p 00000000 00:00 0
Aug 26 23:45:24 45abe6c0000-45abe700000 rw-p 00000000 00:00 0
Aug 26 23:45:24 589fe440000-589fe480000 rw-p 00000000 00:00 0
Aug 26 23:45:24 6e0850c0000-6e085100000 rw-p 00000000 00:00 0
Aug 26 23:45:24 bbbf1ac0000-bbbf1b00000 rw-p 00000000 00:00 0
Aug 26 23:45:24 bee460d0000-bee46100000 ---p 00000000 00:00 0
Aug 26 23:45:24 bee46100000-bee46101000 rw-p 00000000 00:00 0
Aug 26 23:45:24 bee46101000-bee46102000 ---p 00000000 00:00 0
Aug 26 23:45:24 bee46102000-bee46127000 r-xp 00000000 00:00 0
Aug 26 23:45:24 bee46127000-bee4613f000 ---p 00000000 00:00 0
Aug 26 23:45:24 bee4613f000-bee46140000 ---p 00000000 00:00 0
Aug 26 23:45:24 bee46140000-bee46141000 rw-p 00000000 00:00 0
Aug 26 23:45:24 bee46141000-bee46142000 ---p 00000000 00:00 0
Aug 26 23:45:24 bee46142000-bee4617f000 r-xp 00000000 00:00 0
Aug 26 23:45:24 bee4617f000-bee4e0d0000 ---p 00000000 00:00 0
Aug 26 23:45:24 c964df80000-c964df81000 rw-p 00000000 00:00 0
Aug 26 23:45:24 13d637140000-13d637180000 rw-p 00000000 00:00 0
Aug 26 23:45:24 14d13e880000-14d13e8c0000 rw-p 00000000 00:00 0
Aug 26 23:45:24 1661ade40000-1661ae761000 rw-p 00000000 00:00 0
Aug 26 23:45:24 181053400000-181053440000 rw-p 00000000 00:00 0
Aug 26 23:45:24 1a44f3740000-1a44f3780000 rw-p 00000000 00:00 0
Aug 26 23:45:24 Memory around native instruction pointer (0x7f19392d69e2):
Aug 26 23:45:24 0x7f19392d69d2 00 00 b8 0e 00 00 00 31 d2 bf 02 00 00 00 0f 05 .......1........
Aug 26 23:45:24 0x7f19392d69e2 c3 48 63 ff 50 b8 24 00 00 00 0f 05 48 89 c7 e8 .Hc.P.$.....H...
Aug 26 23:45:24 0x7f19392d69f2 ac 9a fd ff 5a c3 48 63 ff 50 48 63 f6 b8 3e 00 ....Z.Hc.PHc..>.
Aug 26 23:45:24 0x7f19392d6a02 00 00 0f 05 48 89 c7 e8 94 9a fd ff 5a c3 85 ff ....H.......Z...
Aug 26 23:45:24
Aug 26 23:45:24 =================================================================
Aug 26 23:45:24 Got a SIGABRT while executing native code. This usually indicates
Aug 26 23:45:24 a fatal error in the mono runtime or one of the native libraries
Aug 26 23:45:24 used by your application.
Aug 26 23:45:24 =================================================================
Aug 26 23:45:24
Aug 26 23:45:24 GlobalError: An error occurred while checking server license key: HTTP 403 - error code: 1020
Aug 26 23:45:24
Aug 26 23:45:24 [txAdmin:FXRunner] >> [73] FXServer Exited.
Aug 26 23:45:24 [txAdmin:FXRunner] >> [73] FXServer Closed. (code null)
Aug 26 23:45:24 [txAdmin:FXRunner] FXServer didn't start. This is not an issue with txAdmin.

Can someone help?

Let me add some more information:

Port 30120 TCP/UDP is allowed.
Running inside Docker on Linux.
Web txAdmin Port 40120 is redirected to 443 via nginx proxy.

Some environment information:

/app/code/ contains all static files for the server
/app/data/ contains all moving files, for example server-data and txData

:man_facepalming: Well after a wipe I have to add the licence again… silly me.