1. Check whether the security package is integrated and the integration position is correct
2. Confirm if the following dependency exists in the dependencies of build.gradle: implementation fileTree(include: ['*.aar'], dir: 'libs') 3. Check if the previous security image has not been deleted, it must be deleted if not
4. If all the above checks still fail, it is recommended to refresh the front-end page, download the security package again, delete the cache and debug.apk files in the build file of the local project, and then run it again.