[Server Armour] An ArgumentNullException occured. Please notify the developer along with the below information: (18:06:59) | [Server Armour] {"id":17925,"steamid":"76561############","steamlevel":5,"steamCommunityBanned":0,"steamVACBanned":1,"steamNumberOfVACBans":1,"steamDaysSinceLastBan":"593","lastServerBan":163,"steamNumberOfGameBans":0,"steamEconomyBan":"none","steamBansLastCheck":"2020-11-05T18:07:00.000Z","created":"2020-01-25T19:50:26.000Z","lastSeen":"2020-10-25T16:49:41.000Z","lastBan":null,"totalBans":"1","rustadminBanCount":0,"rustadminLastCheck":"2020-08-04T08:03:35.000Z","lastKnownUsername":"Dryvag2na","lastIp":"pvt","ipRating":0.20000000298023224,"country":"EE","ipLastCheck":"2020-10-22T15:27:48.000Z","bloodyScriptsCount":"0","communityvisibilitystate":"3","profilestate":"1","personaname":"**********","avatar":"https://steamcdn-a.akamaihd.net/steamcommunity/public/images/avatars/0c/0cd0d8c218af759ad00e8ca6a6c7b2ff0074220b.jpg","personastateflags":"0","avgProb":75,"aimbotViolations":"0","steamDaysOld":2121,"twitterBanId":"0","twitterBanDate":null,"bans":[{"adminSteamId":null,"id":4555,"steamid":"76561############","reason":"VAC Ban","banLength":"perm","serverName":"BATTLEFIELD 10000X + LOOT|KITS|BP|FUN|MODS","serverIp":"*.*.*.*","dateTime":"2020-05-26T23:51:00.000Z","created":"2020-05-26T22:50:53.000Z","gameId":252490,"banUntil":"2030-05-24T23:57:00.000Z","playerIp":null}],"lender":null} (18:06:59) | [Server Armour] at Oxide.Plugins.ServerArmour.m__A (Oxide.Plugins.ServerArmour+ISABan x) [0x00040] in <1d8cd1db96cb442b96b8e6b8729414d3>:0 at System.Linq.Enumerable.TryGetFirst[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate, System.Boolean& found) [0x0003f] in <351e49e2a5bf4fd6beabb458ce2255f3>:0 at System.Linq.Enumerable.FirstOrDefault[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00000] in <351e49e2a5bf4fd6beabb458ce2255f3>:0 at Oxide.Plugins.ServerArmour.IsBanned (System.String steamid) [0x000ee] in <1d8cd1db96cb442b96b8e6b8729414d3>:0 at Oxide.Plugins.ServerArmour.KickIfBanned (Oxide.Plugins.ServerArmour+ISAPlayer isaPlayer) [0x00022] in <1d8cd1db96cb442b96b8e6b8729414d3>:0 at Oxide.Plugins.ServerArmour+<_webCheckPlayer>c__AnonStorey1.<>m__0 (System.Int32 code, System.String response) [0x000e4] in <1d8cd1db96cb442b96b8e6b8729414d3>:0

Thank you for the information. Has this only happened once?

Yes only once