opt: expected table, got string

Describe the bug

I used the config from README.md (https://github.com/nvim-orgmode/orgmode/blob/a49d5d4c479cbf70acf261c1e8f1f69947ed1b81/README.org#installation)

and got the error:

Failed to run `config` for orgmode

...a/lazy/orgmode/lua/orgmode/config/mappings/map_entry.lua:53: opt: expected table, got string
# stacktrace:
- vim\shared.lua:936 _in_ **validate**
- orgmode\lua\orgmode\config\mappings\map_entry.lua:53 _in_ **action**
- orgmode\lua\orgmode\config\mappings\init.lua:5
- orgmode\lua\orgmode\config\init.lua:6
- orgmode\lua\orgmode\init.lua:122 _in_ **setup**
- AppData/Local/nvim/lua/plugins/lazy.lua:10 _in_ **config**
- scoop/apps/neovim/current/share/nvim/runtime/filetype.lua:36
- scoop/apps/neovim/current/share/nvim/runtime/filetype.lua:35
                                                                                          

checkhealth

orgmode: require("orgmode.health").check()

Orgmode ~

• ERROR Treesitter grammar is not installed. Run :Org install_treesitter_grammar to install it.
• ERROR Failed to run healthcheck for "orgmode" plugin. Exception:
  ...Data/Local/nvim-data/lazy/orgmode/lua/orgmode/health.lua:55: loop or previous error loading module 'orgmode.config'

Steps to reproduce

Use the default config from README.md and open an .org file.

Expected behavior

orgmode starts without error.

Emacs functionality

No response

Minimal init.lua

-- Enter your minimal_init.lua here

Screenshots and recordings

No response

nvim-orgmode version

a49d5d4

OS / Distro

Windows 10

Neovim version/commit

NVIM v0.10.3 Build type: Release LuaJIT 2.1.1713484068 Run "nvim -V1 -v" for more info

Additional context

No response

Start with the installation configuration in README.org and the validation failure at lua/orgmode/config/mappings/map_entry.lua:53. Reproduce it by opening an .org file with the documented configuration, then trace the reported mapping option and verify that Orgmode starts without the “expected table, got string” error.