A Payload was detected but an error was reported indicating that the database could not be recognized.

[VBPush]

Hello author, I had a problem while testing with the latest version of SQLMAP(1.8#stable). As shown in the following figure, why SQLMAP, after running an injectable Payload, reports an error [sqlmap was not able to fingerprint the back-end database management system] and exits?

I retest the payload, in the form of request packets, to make sure that delayed injection can be triggered normally.