Here is the log:
Tried curl https://auth.factorio.com/tls-check/success on the same ubuntu, also got0.020 Running in headless mode
0.020 Audio is disabled
0.030 Info ModManager.cpp:449: FeatureFlag expansion-shaders = true
0.030 Info ModManager.cpp:449: FeatureFlag freezing = true
0.030 Info ModManager.cpp:449: FeatureFlag quality = true
0.031 Info ModManager.cpp:449: FeatureFlag rail-bridges = true
0.031 Info ModManager.cpp:449: FeatureFlag segmented-units = true
0.031 Info ModManager.cpp:449: FeatureFlag space-travel = true
0.031 Info ModManager.cpp:449: FeatureFlag spoiling = true
0.033 Loading mod core 0.0.0 (data.lua)
0.047 Loading mod base 2.0.76 (data.lua)
0.205 Loading mod elevated-rails 2.0.76 (data.lua)
0.239 Loading mod quality 2.0.76 (data.lua)
0.269 Loading mod space-age 2.0.76 (data.lua)
0.490 Loading mod base 2.0.76 (data-updates.lua)
0.528 Loading mod quality 2.0.76 (data-updates.lua)
0.573 Loading mod space-age 2.0.76 (data-updates.lua)
0.701 Checksum for core: 4187927925
0.701 Checksum of base: 1879415942
0.701 Checksum of elevated-rails: 70351106
0.701 Checksum of quality: 1142589254
0.701 Checksum of space-age: 1510664043
1.177 Prototype list checksum: 3295867752
1.231 Info PlayerData.cpp:64: Local player-data.json available, timestamp 1774451064
1.231 Info PlayerData.cpp:71: Cloud player-data.json unavailable
1.232 Factorio initialised
1.233 Info AuthServerConnector.cpp:620: Performing TLS check.
1.233 Info HttpSharedState.cpp:57: Downloading https://auth.factorio.com/tls-check/success
2.180 Info HttpSharedState.cpp:186: Downloading https://auth.factorio.com/tls-check/success
2.180 Info HttpSharedState.cpp:187: Status code: 503
2.180 Info AuthServerConnector.cpp:642: TLS check failed. This could be a temporary connection error or the user's secure connection is broken.
2.180 Info HttpSharedState.cpp:57: Downloading https://auth.factorio.com/tls-check/failure
2.180 Info HttpSharedState.cpp:57: Downloading https://auth.factorio.com/api-login?api_version=6
4.098 Info HttpSharedState.cpp:186: Downloading https://auth.factorio.com/api-login?api_version=6
4.098 Info HttpSharedState.cpp:187: Status code: 503
4.098 Info AuthServerConnector.cpp:35: Failed to reach auth server: code(503) message(no healthy upstream)
4.099 Error CommandLineMultiplayer.cpp:355: Hosting multiplayer game failed: Failed to reach auth server. Code: 503. Error: Unknown error.
4.103 Info ServerMultiplayerManager.cpp:146: Quitting multiplayer connection.
4.103 Info ServerMultiplayerManager.cpp:808: updateTick(18446744073709551615) changing state from(Ready) to(Closed)
4.103 Info ServerMultiplayerManager.cpp:166: Deleting active scenario (global = true).
4.149 Goodbye
no healthy upstream