Server crash when trying to expand a resource area

[Eldrinn-Elantey]

The server crashed when I tried to expand the oil section, or rather clicked on the expansion function, tried to allocate, but the neighboring copper was allocated as a new section and when trying to cancel the expansion of the site, the server crashed with an error:

98455.947 Error MainLoop.cpp:1284: Exception at tick 6052938: The mod YARM - Resource Monitor (0.8.203) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event YARM::on_gui_click (ID 1)
__YARM__/resmon.lua:550: attempt to index local 'site' (a nil value)
stack traceback:
        __YARM__/resmon.lua:550: in function 'submit_site'
        __YARM__/resmon.lua:1137: in function 'expand_site'
        __YARM__/resmon.lua:1271: in function <__YARM__/resmon.lua:1259>
98455.948 Error ServerMultiplayerManager.cpp:91: MultiplayerManager failed: "The mod YARM - Resource Monitor (0.8.203) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event YARM::on_gui_click (ID 1)
__YARM__/resmon.lua:550: attempt to index local 'site' (a nil value)
stack traceback:
        __YARM__/resmon.lua:550: in function 'submit_site'
        __YARM__/resmon.lua:1137: in function 'expand_site'
        __YARM__/resmon.lua:1271: in function <__YARM__/resmon.lua:1259>"
98455.949 Info ServerMultiplayerManager.cpp:796: updateTick(6052938) changing state from(InGame) to(Failed)
98455.963 Quitting: multiplayer error.