tailwindcss: Add referece to skipInlineImportsNotFound when import not found in assets

See #14273

diff --git a/resources/resource_transformers/cssjs/inline_imports.go b/resources/resource_transformers/cssjs/inline_imports.go
index 98e3292cd912c2f886ec394fe3ea98663f5fe26b..44ae4b3c6cbafde4c488fc447e5978e9485ce995 100644 (file)
--- a/resources/resource_transformers/cssjs/inline_imports.go
+++ b/resources/resource_transformers/cssjs/inline_imports.go
@@ -118,7 +118,8 @@ func (imp *importResolver) importRecursive(
                                        LineNumber:   offset + 1,
                                        ColumnNumber: column + 1,
                                }
-                               return 0, "", herrors.NewFileErrorFromFileInPos(fmt.Errorf("failed to resolve CSS @import \"%s\"", filename), pos, imp.fs, nil)
+                               msgDetail := "if this import's source lives in node_modules, enable the skipInlineImportsNotFound option, see https://gohugo.io/functions/css/postcss/#skipinlineimportsnotfound"
+                               return 0, "", herrors.NewFileErrorFromFileInPos(fmt.Errorf("failed to resolve CSS @import \"%s\"; %s", filename, msgDetail), pos, imp.fs, nil)
                        }
 
                        i--