The cause of this error is so varied that it is difficult to list everything. 

But in many cases, it happens in the following situations.

1. When the API and BioStar version do not match

ex) BioStar 2.6.4 / BioStar 2 API 2.6.0

Solution: Re-install with compatible BioStar 2 and BioStar 2 API

2. When the generated API domain information is inconsistent

-> Local API information is different from Cloud API information. Please note.

Solution: If you can not remember the registered Local API information, please re-install it at or check it with MongoDB information.

[BioStar API] How to check your local API server information in MongoDB?

3. When Protocal (http or https) or IP address is different when registering API

Solution: Register a new Local API for the changed Protocal or IP address -

If the issuer persists after checking above, please contact TS team with information below.

i) BioStar / API version

ii) Screenshot of account info in MongoDB 

iii) API login body

iv) API server logs(C:\Program Files\BioStar 2 API Server(x64)\logs)