Confirm that recent_projects is not null before using

lua/project_nvim/utils/history.lua

@@ -1,7 +1,7 @@
 local path = require("project_nvim.utils.path")
 local uv = vim.loop
 local M = {}
-local is_windows = vim.fn.has('win32') or vim.fn.has('wsl')
+local is_windows = vim.fn.has("win32") or vim.fn.has("wsl")
 
 M.recent_projects = nil -- projects from previous neovim sessions
 M.session_projects = {} -- projects from current neovim session
@@ -27,13 +27,13 @@ local function dir_exists(dir)
 end
 
 local function normalise_path(path_to_normalise)
-    local normalised_path = path_to_normalise:gsub("\\", "/"):gsub("//", "/")
+  local normalised_path = path_to_normalise:gsub("\\", "/"):gsub("//", "/")
 
-    if is_windows then
-       normalised_path = normalised_path:sub(1,1):lower()..normalised_path:sub(2)
-    end
+  if is_windows then
+    normalised_path = normalised_path:sub(1, 1):lower() .. normalised_path:sub(2)
+  end
 
-    return normalised_path
+  return normalised_path
 end
 
 local function delete_duplicates(tbl)
@@ -60,9 +60,11 @@ local function delete_duplicates(tbl)
 end
 
 function M.delete_project(project)
-  for k, v in ipairs(M.recent_projects) do
-    if v == project.value then
-      M.recent_projects[k] = nil
+  if M.recent_projects ~= nil then
+    for k, v in ipairs(M.recent_projects) do
+      if v == project.value then
+        M.recent_projects[k] = nil
+      end
     end
   end
 end