Error on print center text

[Nerus87]

L 06/05/2017 - 11:09:07: SourceMod error session started
L 06/05/2017 - 11:09:07: Info (map "aim_deagle7k") (file "errors_20170605.log")
L 06/05/2017 - 11:09:07: [SM] Exception reported: Could not send a usermessage
L 06/05/2017 - 11:09:07: [SM] Blaming: umc-echonextmap.smx
L 06/05/2017 - 11:09:07: [SM] Call stack trace:
L 06/05/2017 - 11:09:07: [SM] [0] PrintCenterText
L 06/05/2017 - 11:09:07: [SM] [1] Line 409, .../cstrike/addons/sourcemod/scripting/include/halflife.inc::PrintCenterTextAll
L 06/05/2017 - 11:09:07: [SM] [2] Line 377, .../cstrike/addons/sourcemod/scripting/include/umc_utils.inc::DisplayServerMessage
L 06/05/2017 - 11:09:07: [SM] [3] Line 102, umc-echonextmap.sp::UMC_OnNextmapSet
L 06/05/2017 - 11:09:07: [SM] [5] Call_Finish
L 06/05/2017 - 11:09:07: [SM] [6] Line 4875, umc-core.sp::DoMapChange
L 06/05/2017 - 11:09:07: [SM] [7] Line 1797, umc-core.sp::Native_UMCSetNextMap
L 06/05/2017 - 11:09:07: [SM] [9] UMC_SetNextMap
L 06/05/2017 - 11:09:07: [SM] [10] Line 413, umc-randomcycle.sp::DoRandomNextMap
L 06/05/2017 - 11:09:07: [SM] [11] Line 276, umc-randomcycle.sp::Event_GameEnd
L 06/05/2017 - 11:09:07: [SM] [12] Line 259, umc-randomcycle.sp::_VGuiMenu
L 06/05/2017 - 11:09:08: Error log file session closed.