fixed lsp DiagnosticSign icons in gutter

after/plugin/lsp.lua

 -- [[ Configure LSP ]]
 --  This function gets run when an LSP connects to a particular buffer.
 local on_attach = function(_, bufnr)
+  local signs = { Error = "", Warn = "", Hint = "", Info = "" }
+  for type, icon in pairs(signs) do
+    local hl = "DiagnosticSign" .. type
+    vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = "" })
+  end
   -- NOTE: Remember that lua is a real programming language, and as such it is possible
   -- to define small helper and utility functions so you don't have to repeat yourself
   -- many times.

after/plugin/nvim-web-icons.lua

+require 'nvim-web-devicons'.setup {
+	override = {
+		LspDiagnosticsSignError = {
+			icon = '',
+			color = '#ff6b6b',
+			name = 'LspDiagnosticsSignError',
+		},
+		LspDiagnosticsSignWarning = {
+			icon = '',
+			color = '#ffaa00',
+			name = 'LspDiagnosticsSignWarning',
+		},
+		LspDiagnosticsSignInformation = {
+			icon = '',
+			color = '#8cc4ff',
+			name = 'LspDiagnosticsSignInformation',
+		},
+		LspDiagnosticsSignHint = {
+			icon = '',
+			color = '#a9a9a9',
+			name = 'LspDiagnosticsSignHint',
+		},
+	},
+}
+

lua/plugins.lua

@@ -133,19 +133,6 @@ return {
 	{
 		"folke/trouble.nvim",
 		dependencies = { "nvim-tree/nvim-web-devicons" },
-		-- opts = {
-		-- 	-- your configuration comes here
-		-- 	-- or leave it empty to use the default settings
-		-- 	-- refer to the configuration section below
-		-- 	signs = {
-		-- 		-- icons / text used for a diagnostic
-		-- 		error = "",
-		-- 		warning = "",
-		-- 		hint = "",
-		-- 		information = "",
-		-- 		other = "",
-		-- 	},
-		-- },
 	},
 
 	'NvChad/nvim-colorizer.lua',
@@ -154,7 +141,9 @@ return {
 	-- install without yarn or npm
 	{
 		"iamcco/markdown-preview.nvim",
-		run = function() vim.fn["mkdp#util#install"]() end,
+		run = function()
+			vim.fn["mkdp#util#install"]()
+		end,
 	}
 
 }