Error upon every action if file isn't .lua

[Nixill]

Describe the bug
If a file isn't a .lua file, but has its language set to (or detected as) Lua anyway, an error occurs every single time any action is taken in that file (scroll, type one key, click anywhere, etc).

To Reproduce
Steps to reproduce the behavior:

1. Create a file with the extension .txt
2. Manually set the file's language to Lua
3. Do literally anything
4. Error pops up

Expected behavior
Expected behavior is syntax highlighting and some autocompletion features.

Environment (please complete the following information):

• OS: Windows
• Is WSL remote? (no)
• Client: VSCode Insiders

Provide logs

[16:33:05.349][debug][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/provider\provider.lua:165]: didOpen	file:///c%3A/Users/Nixill/Programs/Synchrony/Synchrony/components-41.2.txt
[16:33:05.349][debug][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:135]: Method [textDocument/documentSymbol] takes [0.812]sec.
[16:33:05.349][debug][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:135]: Method [textDocument/semanticTokens/range] takes [0.806]sec.
[16:33:05.349][debug][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:135]: Method [textDocument/semanticTokens/range] takes [0.641]sec.
[16:33:06.349][debug][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:135]: Method [textDocument/didOpen] takes [1.814]sec.
[16:33:08.521][debug][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/provider\diagnostic.lua:358]: 全文诊断耗时：	1.166
[16:33:12.021][error][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\converter.lua:131]: ...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:69: attempt to index a nil value (local 'state')
stack traceback:
	...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:131: in function 'proto.converter.unpackRange'
	...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:617: in function <...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:608>
	[C]: in function 'xpcall'
	...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:148: in function <...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:123>
[16:33:12.834][error][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\converter.lua:132]: ...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:69: attempt to index a nil value (local 'state')
stack traceback:
	...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:132: in function 'proto.converter.unpackRange'
	...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:711: in function <...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:699>
	[C]: in function 'xpcall'
	...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:148: in function <...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:123>
[16:33:12.990][error][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\converter.lua:131]: ...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:69: attempt to index a nil value (local 'state')
stack traceback:
	...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:131: in function 'proto.converter.unpackRange'
	...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:617: in function <...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:608>
	[C]: in function 'xpcall'
	...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:148: in function <...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:123>
[16:33:14.849][error][#0:c:\Users\Nixill\.vscode-insiders\extensions\sumneko.lua-2.4.2\server/script/proto\converter.lua:132]: ...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:69: attempt to index a nil value (local 'state')
stack traceback:
	...ions\sumneko.lua-2.4.2\server/script/proto\converter.lua:132: in function 'proto.converter.unpackRange'
	...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:711: in function <...ns\sumneko.lua-2.4.2\server/script/provider\provider.lua:699>
	[C]: in function 'xpcall'
	...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:148: in function <...tensions\sumneko.lua-2.4.2\server/script/proto\proto.lua:123>

[ChrisKader]

This happens even if the file or the directory of the file is ignored in the extensions settings. The only way to stop these errors on a specific file is to change the Language mode of the file.