diff --git a/main.py b/main.py
index ffcd71e..3833c7a 100644
--- a/main.py
+++ b/main.py
@@ -2,6 +2,7 @@ import cgi
 import datetime
 import pytz
 import html
+import traceback
 
 import workers.conn
 import workers.val
@@ -78,7 +79,7 @@ def doConn(req):
  except Exception as e:
   content = "<h1>500 Internal Server Error</h1>\n"
   if "debug" in req.args:
-   content += str(e)
+   content += traceback.format_exc().replace("\n", "<br />")
   return Response(HTTP500, HTML, content)
 
  return Response(HTTP200, JSON if req.json else XML, content)
@@ -104,7 +105,7 @@ def doVal(req):
  except Exception as e:
   content = "<h1>500 Internal Server Error</h1>\n"
   if "debug" in req.args:
-   content += str(e).encode()
+   content += traceback.format_exc().replace("\n", "<br />")
   return Response(HTTP500, HTML, content)
 
  return Response(HTTP200, JSON if req.json else XML, content)
@@ -139,7 +140,7 @@ def doNearby(req):
  except Exception as e:
   content = "<h1>500 Internal Server Error</h1>"
   if "debug" in req.args:
-   content += repr(e)
+   content += traceback.format_exc().replace("\n", "<br />")
   return Response(HTTP500, HTML, content)
 
  return Response(HTTP200, JSON if req.json else XML, content)
@@ -152,7 +153,7 @@ def doRadar(req):
  except Exception as e:
   content = "<h1>500 Internal Server Error</h1>\n"
   if "debug" in req.args:
-   content += repr(e)
+   content += traceback.format_exc().replace("\n", "<br />")
   return Response(HTTP500, HTML, content)
 
  return Response(HTTP200, JSON if req.json else XML, content)
@@ -195,7 +196,7 @@ def doDepArr(req):
  except Exception as e:
   content = "<h1>500 Internal Server Error</h1>\n"
   if "debug" in req.args:
-   content += str(e)
+   content += traceback.format_exc().replace("\n", "<br />")
   return Response(HTTP500, HTML, content)
 
  return Response(HTTP200, JSON if req.json else XML, content)