empty string period is inf

cmd/cli/main.go

@@ -353,7 +353,7 @@ func Main() {
 		}
 		f, err := os.Open(config.CSV)
 		if err != nil {
-			log.Fatalf("cannot open csv %q: %w", config.CSV, err)
+			log.Fatalf("cannot open csv %q: %v", config.CSV, err)
 		}
 		defer f.Close()
 		reader := csv.NewReader(f)
@@ -384,7 +384,7 @@ func Main() {
 				break
 			}
 			if err != nil {
-				log.Fatalf("failed to read csv line: %w", err)
+				log.Fatalf("failed to read csv line: %v", err)
 			}
 
 			dates := []string{}