I pretty sure what it happens when you enter the city with specific building, or build something while hero is in city. I think that it is building that gives some improvements to hero. I’ve tried to enable/disable mods with no success.
vcmiserver: /build/vcmi-MILGa1/vcmi-0.99+git202103052100~ubuntu20.04.1/lib/mapObjects/CGTownInstance.cpp:1865: const string CGTownBuilding::getVisitingBonusGreeting() const: Assertion `!bonusGreeting.empty()’ failed.
Aborted (core dumped)
Error: server failed to close correctly or crashed!
Check /home/michael/.cache/vcmi/server_log.txt for more info
Lost connection to server, ending listening thread!
server_log.txt :
e[1;32mVCMI 0.99 GITDIR-NOTFOUND (server)
e[0me[1;32m Initialization: 9 ms
e[0me[1;32m Data loading: 20 ms
e[0me[1;32m Mod handler: 0 ms
e[0me[1;32m Mod filesystems: 27 ms
e[0me[1;32mBasic initialization: 58 ms
e[0me[1;32mInitialized logging system based on settings successfully.
e[0me[1;32m[log level] ai => not set
e[0me[1;32m[log level] animation => not set
e[0me[1;32m[log level] bonus => not set
e[0me[1;32m[log level] global => trace
e[0me[1;32m[log level] mod => not set
e[0me[1;32m[log level] network => not set
e[0me[1;32m Bonus type handler: 1 ms
e[0me[1;32m General text handler: 4 ms
e[0me[1;32m Hero handler: 1 ms
e[0me[1;32m Artifact handler: 0 ms
e[0me[1;32m Creature handler: 0 ms
e[0me[1;32m Town handler: 0 ms
e[0me[1;32m Object handler: 0 ms
e[0me[1;32m Object types information handler: 0 ms
e[0me[1;32m Spell handler: 0 ms
e[0me[1;32m Skill handler: 0 ms
e[0me[1;32m Terrain view pattern handler: 0 ms
e[0me[1;32m Template handler: 0 ms
e[0me[1;32m Initializing handlers: 7 ms
e[0me[1;32m Initializing content handler: 0 ms
e[0me[1;32m [765a1076]Original game files
e[0me[1;32m [994e5d35]Axolotl Creatures Pack
e[0me[1;32m [c03e1da5]Centamonths
e[0me[1;32m [c8720a31]Evil trees
e[0me[1;32m [8e265236]Dragons
e[0me[1;32m [ac61bcf6]Ironclads
e[0me[1;32m [f8032319]Kappas
e[0me[1;32m [4176dd5b]sphinxes
e[0me[1;32m [cdc51ad2]Tortofroids
e[0me[1;32m [175397af]Yetis
e[0me[1;32m [9c219a3b]Dark elemental
e[0me[1;32m [fb43aea1]H4 artifacts - commanders
e[0me[1;32m [6f4e30ac]H4 artifacts - regular
e[0me[1;32m [a820137f]New Terrains (ERA II mod port)
e[0me[1;32m [ed8a7f5a]High-res Menu
e[0me[1;32m [69a39c09]New Old Spells
e[0me[1;32m [392127be]VCMI essential files
e[0me[1;32m [b611ce43]Creature bonus icons
e[0me[1;32m [c7957b5b]Default templates
e[0me[1;32m [c5c0dd2b]HD Mod RMGs
e[0me[1;33me[0me[1;33me[0me[1;32m [ff98a13b]OH3 RMGs
e[0me[1;32m [12072856]Extra resolutions
e[0me[1;32m [57ca1cef]Witchking artifacts
e[0me[1;32m [cfe10cb3]In The Wake of Gods
e[0me[1;32m [022007a2]WoG russian translation
e[0me[1;32m [62fb46b3]WoG russian translation
e[0me[1;32m Parsing mod data: 162 ms
e[0me[1;33me[0me[1;32m [SKIP] Original game files
e[0me[1;32m [SKIP] Axolotl Creatures Pack
e[0me[1;32m [SKIP] Centamonths
e[0me[1;32m [SKIP] Evil trees
e[0me[1;32m [SKIP] Dragons
e[0me[1;32m [SKIP] Ironclads
e[0me[1;32m [SKIP] Kappas
e[0me[1;32m [SKIP] sphinxes
e[0me[1;32m [SKIP] Tortofroids
e[0me[1;32m [SKIP] Yetis
e[0me[1;33me[0me[1;33me[0me[1;31me[0me[1;32m [SKIP] H4 artifacts - commanders
e[0me[1;32m [SKIP] H4 artifacts - regular
e[0me[1;32m [SKIP] New Terrains (ERA II mod port)
e[0me[1;32m [SKIP] High-res Menu
e[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;32m [SKIP] New Old Spells
e[0me[1;32m [SKIP] VCMI essential files
e[0me[1;32m [SKIP] Creature bonus icons
e[0me[1;32m [SKIP] Default templates
e[0me[1;32m [SKIP] HD Mod RMGs
e[0me[1;32m [SKIP] OH3 RMGs
e[0me[1;32m [SKIP] Extra resolutions
e[0me[1;32m [SKIP] Witchking artifacts
e[0me[1;32m [SKIP] In The Wake of Gods
e[0me[1;32m [SKIP] WoG russian translation
e[0me[1;32m [SKIP] WoG russian translation
e[0me[1;32m Loading mod data: 55 ms
e[0me[1;32m Resolving identifiers: 7 ms
e[0me[1;33me[0me[1;33me[0me[1;33me[0me[1;32m Handlers post-load finalization: 5 ms
e[0me[1;32m All game content loaded in 229 ms
e[0me[1;32mPort 3030 will be used
e[0me[1;32mListening for connections at port 3030
e[0me[1;32mWe got a new connection! 
e[0me[1;32mEstablished connection with VCMI 0.99 GITDIR-NOTFOUND (client). UUID: 9ae76de2-c2ef-46a9-9e80-223896c862d5
e[0me[1;32mConnection with client 1 established. UUID: e832a359-24fe-4cff-ac11-2e62f644c90c
e[0me[1;32mClient 1 player: Player
e[0me[1;32msystem says: Player (pid cid 1) joins the game
e[0me[1;32mPreparing to start loaded game
e[0me[1;32mLoading from SAVES/AUTOSAVE_2
e[0me[1;32mLoading lib part of game…
e[0me[1;32m Reading header
e[0me[1;32m Reading options
e[0me[1;32m Reading handlers
e[0me[1;32m Reading gamestate
e[0me[1;32mSomething wrong during accepting: Operation canceled
e[0me[1;32mLoading server state
e[0me[1;32mGame has been successfully loaded!
e[0me[1;32mThread handling connections ended
e[0me[1;32mConnection 1 will handle 9 player: 0 1 2 3 4 5 6 7 255
