Could not find required plugin nativevotes

[cs2zone]

L 06/13/2020 - 02:22:08: [SM] Exception reported: Failed to create native "HasEndOfMapVoteFinished", name is probably already in use L 06/13/2020 - 02:22:08: [SM] Blaming: umc/umc-endvote.smx L 06/13/2020 - 02:22:08: [SM] Call stack trace: L 06/13/2020 - 02:22:08: [SM] [0] CreateNative L 06/13/2020 - 02:22:08: [SM] [1] Line 143, Y:\SourcemodProjects_SMDevENV1_10\addons\sourcemod\scripting\umc-endvote.sp::AskPluginLoad2 L 06/13/2020 - 02:22:08: [SM] Failed to load plugin "umc/umc-endvote.smx": unexpected error 23 in AskPluginLoad callback. L 06/13/2020 - 02:22:08: [SM] Unable to load plugin "umc/umc-nativevotes.smx": Could not find required plugin "nativevotes" L 06/13/2020 - 02:22:08: [SM] Exception reported: Array index out-of-bounds (index -1, limit 66)

am i doing something wrong?