diff --git a/internal/lsp/cache/load.go b/internal/lsp/cache/load.go
index b44be38..01ec4ec 100644
--- a/internal/lsp/cache/load.go
+++ b/internal/lsp/cache/load.go
@@ -118,6 +118,9 @@
 			return err
 		}
 		modContent, err = modFH.Read()
+		if err != nil {
+			return err
+		}
 		var sumFH source.FileHandle
 		if mod.sumURI != "" {
 			sumFH, err = s.GetFile(ctx, mod.sumURI)