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Common Installation Issues

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"CORS error" or "Invalid CORS request"

If you are seeing a CORS error in your browser, this means that you are accessing the REST API via an "untrusted" client application.  To fix this error, you must change your REST API / Backend configuration to trust the application.

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If you modify either of the above settings, you will need to restart Tomcat for the changes to take effect.

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"403 Forbidden" error with a message that says "Access is denied. Invalid CSRF Token"

First, double check that you are seeing that exact message.  403 Forbidden can be thrown in a variety of scenarios...it could be page that requires a login, you could have entered an invalid username or password, or you could even be seeing a CORS error (see previous issue for how to solve that). 

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