reintsalled game to the lateste ver and showed "Object reference not set to an instance of an object" every time I entered game , After fully check ,found the log below:
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NetworkAnarchy.log:

[Info] 0.0015372 | [NA13] NetworkAnarchy: Deployed early patches
[Info] 6.0840880 | [NA48] Network Anarchy Locale changed ->zh-CN
[Info] 8.1580240 | [NA48] Network Anarchy Locale changed zh-CN->zh-CN
[Info] 18.6897247 | [Q01] Found 0 incompatible mods
[Info] 118.3161959 | [NA48] Network Anarchy Locale changed zh-CN->zh-CN
[Info] 119.9068161 | [NA48] Network Anarchy Locale changed zh-CN->zh-CN
[Debug] 177.8829020 | [Q05] QPatcher PatchAll applied
[Info] 177.8880942 | [NA61] NetworkAnarchy: Cross The Line not found, patch applied
[Info] 286.3914348 | [NA09] NetworkAnarchy: Network Skins not found
[Info] 286.3923990 | [NA06] NetworkAnarchy: Network Multitool loaded
[Info] 286.4026223 | [NA03] NetworkAnarchy: Zoning Adjuster loaded
[Info] 286.6349456 | [NA24] Upgrade button template not found
[Info] 286.6454923 | [NA56] Applying Network Tiling (7 segments, 0 nodes)
[Info] 286.6458274 | [NA57] Enabled outside connections for 695 roads
[Debug] 286.6475844 | [NA41] Setting Bending to enabled
[Info] 286.6481570 | [NA22] NetworkAnarchy Initialized
[Info] 289.1948160 | [NA38] Button parent is null (m_parent is <null>)
Called by:<CreateButton>b__35_1
[Debug] 303.2692713 | Updating tool activation: RelevantTool:False
netTool:False, bulldoze:False, NMT:False, ZA:False, Intersection:False
prefab:<null> (was:<null> [True]) Tool:DefaultTool (was:)
[Debug] 303.2696068 | [NA63] Deactivating in Update because prefab is null
[Debug] 303.2698864 | [NA53.1] Deactivated False m_current:
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Output_log.txt

[NetworkMultitool][191.0414] Cant access to Node Spacer
Object reference not set to an instance of an object
at NetworkMultitool.BaseCreateMode..ctor () [0x00000] in <filename unknown>:0
191,011ms | Assembly resolution failure. No assembly named 'NetworkAnarchy.Patches.NT_CreateNode' was found. [Serialization]

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also the problem overlapping happened,hope this help