Invalid CORS pre-flight request. HTTP header not allowed.
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 I have an issue with CORS when trying to access the oauth2/token endpoint  
    I tried disabling CORS but it doesn't work 
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 @bvb1992bvb What does the event log say? https://fusionauth.io/docs/v1/tech/admin-guide/troubleshooting#event-log has details about how to view it. 
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 This is all what the event log says: 
  It seems there is a similar issue reported here: 
 https://fusionauth.io/community/forum/topic/835/cors-error-when-posting-to-oauth2-token/7It's working when I use postman 
