cgi.patch

--- cgi.py	2020-10-25 15:57:14.376953800 -0500
+++ cgi_fix.py	2020-10-25 16:15:15.002526300 -0500
@@ -686,7 +686,10 @@
                 if not data:
                     self.done = -1
                     break
-                self.file.write(data)
+                if self._binary_file:
+                    self.file.write(data)
+                else:
+                    self.file.write(data.decode())
                 todo = todo - len(data)
 
     def read_lines(self):