fix: readme error

app/helpers/repositories_helper.rb

@@ -33,6 +33,7 @@ module RepositoriesHelper
 
   def readme_render_decode64_content(str, path)
     return nil if str.blank?
+    begin
       content = Base64.decode64(str).force_encoding('UTF-8')
 
       c_regex = /\!\[.*?\]\((.*?)\)/
@@ -61,6 +62,9 @@ module RepositoriesHelper
       end
   
       return content
+    rescue
+      return str
+    end
   end
 
   # unix_time values for example: 1604382982

app/views/repositories/detail.json.jbuilder

@@ -1,7 +1,7 @@
 json.content @project.content
 json.website @project.website
 if @result[:readme].blank?
-  json.readme nil!
+  json.readme nil
 else
   json.readme @result[:readme].merge(content: readme_render_decode64_content(@result[:readme]["content"], nil))
 end