am following this guide “Configuration | Camunda Platform 8” to try to access the operate api , when i hit the api using “http://localhost:8081/v1/process-definitions/list” i get the below error in html , also i tested /api/v1/process-definitions/list" and get an empty response
<html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>null</div><div>There was an unexpected error (type=null, status=null).</div><div></div></body></html>
what am i doing wrong ?
Hey @Hasan_Alnatour,
I guess you are using docker-compose to start up things?
Make sure that the port for Operate is actually 8081. 
Besides I noticed that you are using the endpoint v1/process-definitions/list which does not exist according to the API documentation.
If you scroll down on that website you can find some exemplary calls as well.
Hopefully this was helpful for you!
-Thomas
@Hafflgav I am using docker-compose, this is the exact guide I tested , i tested another example and got the same issue running it on 8081
@Hasan_Alnatour if you run this query via your browser you might se some more information about what’s going wrong.
For this one it is quite easy to answer:
- Have you deployed any process to zeebe yet?
- It seems that you are trying to get information on a process definition which does not exist.
- The key shown in the example is just a example. So you do no have a process containing this key deployed on your machine
Does this make sense? 
Best,
Thomas
@Hafflgav oh am sorry wrong screenshots
@Hafflgav please let me know your thoughts
Hey @Hasan_Alnatour!
Sorry for the delay - we have been on our annual retreat with the whole company.
I do run into some similar issues in Postman which is weird.
If I run the query in my browser it works though
I will do some further research why the request fails with postman.
Best,
-Thomas
hi @Hafflgav ,
Thank you for your input, i think the issue is authentication, it works on the browser because you are already authenticated, if you open it where you are not you will be redirected to the /api/login page , so after i added the “OPERATE-SESSION 12101D889B8F49BDC2642B9712453465” cookie , the main issue was an extra space in the cookie text
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Oh noo, that’s unfortunate! Thanks for pointing out that the issue was an extra space! I haven’t actually seen this in my Postman Headers…
Good eyes!
