Found this error while looking through the server logs:
20:36:13: ERROR[main]: ERROR: An unhandled exception occurred: ...erver\bin\..\worlds\server\game\mods\memorandum\init.lua:59: attempt to concatenate field 'text' (a nil value)
20:36:13: ERROR[main]: stack traceback:
20:36:13: ERROR[main]: ...erver\bin\..\worlds\server\game\mods\memorandum\init.lua:59: in function <...erver\bin\..\worlds\server\game\mods\memorandum\init.lua:47>
Found this error while looking through the server logs: