Minecraft server hung and got killed by watchdog

...
[05:34:05] [Server thread/INFO]: shogun8322 joined the game
[05:41:17] [Server thread/WARN]: shogun8322 moved wrongly!
[05:41:17] [Server thread/INFO]: Semienigma lost connection: TranslatableComponent{key='disconnect.timeout', args=[], siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}
[05:41:17] [Server thread/INFO]: Semienigma left the game
[05:41:17] [Server thread/INFO]: The_Donsama lost connection: TranslatableComponent{key='disconnect.timeout', args=[], siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}
[05:41:17] [Server thread/INFO]: The_Donsama left the game
[05:41:17] [Server thread/INFO]: shogun8322 lost connection: TextComponent{text='Disconnected', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}
[05:41:17] [Server thread/INFO]: shogun8322 left the game
[05:41:17] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 30770ms behind, skipping 615 tick(s)
[05:41:18] User Authenticator #144/INFO: UUID of player shogun8322 is 1a7d1dd1-b9d2-4365-b0e2-a71af09a3eeb
[05:41:28] User Authenticator #145/INFO: UUID of player shogun8322 is 1a7d1dd1-b9d2-4365-b0e2-a71af09a3eeb
[05:41:31] User Authenticator #146/INFO: UUID of player The_Donsama is 48db6a31-faba-4200-901e-d1f16e7e3c65
[05:41:34] [Server thread/WARN]: shogun8322 moved wrongly!
[05:41:43] User Authenticator #147/INFO: UUID of player Semienigma is 3e392716-20b4-4e05-9b94-71b6bdf3debc
[05:41:51] [Server thread/WARN]: shogun8322 moved wrongly!
[05:42:08] [Server thread/WARN]: shogun8322 moved wrongly!
[05:42:09] User Authenticator #148/INFO: UUID of player The_Donsama is 48db6a31-faba-4200-901e-d1f16e7e3c65
[05:42:17] [Server Watchdog/FATAL]: A single server tick took 60.01 seconds (should be max 0.05)