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.