No DownloadProgressCallback interface to call on execute()

[angeloorru]

The interface is not available for call. Using 1.1 dependency in maven.

[maxpilotto]

The jar appears to be outdated, if you check this file, the callback is there.
You either have to build it yourself or check if one of the forks have the latest version, if you still need it I've uploaded the latest jar to my fork

[caseyscarborough]

You can fix this by using the version 2cbe41f in your Gradle dependency which is the latest master commit.

implementation 'com.github.sapher:youtubedl-java:2cbe41f'