Hello! I got this error today (2025-05-10) which I seems like related to this PR.

Failed to run `config` for nvim-lspconfig

...share/nvim/lazy/LazyVim/lua/lazyvim/plugins/lsp/init.lua:215: module 'mason-lspconfig.mappings.server' not found:
        no field package.preload['mason-lspconfig.mappings.server']
        cache_loader: module 'mason-lspconfig.mappings.server' not found
        cache_loader_lib: module 'mason-lspconfig.mappings.server' not found
        no file './mason-lspconfig/mappings/server.lua'
        no file '/usr/local/share/lua/5.1/mason-lspconfig/mappings/server.lua'
        no file '/usr/local/share/lua/5.1/mason-lspconfig/mappings/server/init.lua'
        no file './mason-lspconfig/mappings/server.so'
        no file '/usr/local/lib/lua/5.1/mason-lspconfig/mappings/server.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
        no file './mason-lspconfig.so'
        no file '/usr/local/lib/lua/5.1/mason-lspconfig.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'

# stacktrace:
  - /LazyVim/lua/lazyvim/plugins/lsp/init.lua:215 _in_ **config**

To fix this issue I set the version for mason to v1 as suggested here.

return {
  { "mason-org/mason.nvim", version = "^1.0.0" },
  { "mason-org/mason-lspconfig.nvim", version = "^1.0.0" },
}