Ignore invalid UTF-8 characters in log file

CHANGELOG.md

@@ -1,8 +1,9 @@
 ## v7.4.15
- - Removed crashing themes: Evil-Mac & Outcrop
+ - Removed crashing themes: Evil-Mac & Outcrop.
+ - Ignore invalid UTF-8 characters in log file.
 
 ## v7.4.13
- - Attempt to fix install on Ubuntu 16.04
+ - Attempt to fix install on Ubuntu 16.04.
 
 ## v7.4.1
  - Removed trigger-save command, no longer necessary.

fah/ClientConfig.py

@@ -506,6 +506,7 @@ class ClientConfig:
 
         if len(filtered):
             text = '\n'.join(filtered)
+            text = text.decode('utf-8', 'ignore')
             app.log.insert(app.log.get_end_iter(), text + '\n')
             self.scroll_log_to_end(app)