datetime not JSON serializable

apps/output.py

@@ -175,6 +175,7 @@ def format_results(params, data):
             for row in data:
                 if row[2]:
                     row[2] = format(row[2], ",") + f" ({humanize_size(row[2])})"
+    data = [[str(val) for val in row] for row in data]
     return data
 
 
@@ -205,7 +206,6 @@ def get_column_widths(data, header=None):
 def records_to_text(params, data, sep=" "):
     text = ""
     header = get_header(params)
-    data = [[str(val) for val in row] for row in data]
     if params["format"] == "text":
         sizes = get_column_widths(data, header)
         # pad header and rows according to the maximum column width