diff --git a/src/pyj/book_list/boss.pyj b/src/pyj/book_list/boss.pyj
index 50a873857f..586c134f2a 100644
--- a/src/pyj/book_list/boss.pyj
+++ b/src/pyj/book_list/boss.pyj
@@ -66,6 +66,7 @@ class Boss:
             document.title = self.read_ui.current_metadata.title
 
     def onerror(self, msg, script_url, line_number, column_number, error_object):
+        console.log(error_object)
         try:
             fname = str.rpartition(script_url, '/')[-1] or script_url
             msg = msg + '<br><span style="font-size:smaller">' + str.format('Error at {}:{}:{}', fname, line_number, column_number or '') + '</span>'
@@ -75,7 +76,7 @@ class Boss:
             error_dialog(_('Unhandled error'), msg, details)
             return True
         except:
-            console.error('There was an error in the unhandled exception handler')
+            console.log('There was an error in the unhandled exception handler')
 
     def onpopstate(self, ev):
         data = parse_url_params()