[BUG] Frequent crashes with TabnineChat

[DemvSteinbrink]

Describe the bug
Since today (maybe yesterday) I frequently get errors like:

Error executing vim.schedule lua callback: vim/shared.lua:382: after the second argument: expected table, got nil                            
stack traceback:                                                                                                                             
        [C]: in function 'error'                                                                                                             
        vim/shared.lua:936: in function 'validate'                                                                                           
        vim/shared.lua:382: in function 'tbl_extend'                                                                                         
        ...hare/nvim/plugged/tabnine-nvim/lua/tabnine/chat/init.lua:74: in function 'callback'                                               
        ...l/share/nvim/plugged/tabnine-nvim/lua/tabnine/binary.lua:89: in function 'fn'                                                     
        vim/_editor.lua:351: in function <vim/_editor.lua:350>

or

Error executing vim.schedule lua callback: ...hare/nvim/plugged/tabnine-nvim/lua/tabnine/chat/init.lua:90: attempt to index local 'response' 
(a nil value)                                                                                                                                
stack traceback:                                                                                                                             
        ...hare/nvim/plugged/tabnine-nvim/lua/tabnine/chat/init.lua:90: in function 'callback'                                               
        ...l/share/nvim/plugged/tabnine-nvim/lua/tabnine/binary.lua:89: in function 'fn'                                                     
        vim/_editor.lua:351: in function <vim/_editor.lua:350>

and TabnineChat stops working.

To Reproduce
Work with TabnineChat for a while, at some point the error starts popping up.

Expected behavior
No errors caused.

Version Info:

• OS: Debian GNU/Linux trixie/sid
• Neovim version NVIM v0.10.4
• Installed Tabnine Binaries 4.245.0
• Active Tabnine Binaries (cat /path/to/plugin/binaries/.active): There is no .active file

Additional context
Add any other context about the problem here.