HLS stream error

Hi team,
We have a problem sending RTMP H264 stream from IP camera to Wowza Streaming Engine. The HLS stream that Wowza Streaming Engine returned was not working properly. The HLS stream goes black every time we open it and it takes a very long time to load the image from the camera (about 10 minutes). We rechecked the RTMP stream that the camera pushed to Wowza, it worked properly. How can we fix it?

I’m using wowza version 4.7.7
Thank you kindly.