When that happens to me I generally take the thread out, the bobbin out, and the needle out..
If I haven't changed the needle in a while I do that.. make sure it is put in all the way and faces the correct way.. If it's down to far or twisted a bit the hook will miss the thread..
Make sure the bobbin area is clean also.. then carefully re-thread.. Stop at the point and make sure the needle is starting back up.... Let the machine pick up that bobbin thread before you pivot.
Also try another needle size.. and/or use a bit of "Sewers Aid" on your needle. Sometimes a bit of static electricty builds up on the needle and pushes the tread away from the needle..
One of those things always fixes it for me. I hope it works for you too!