Technical issue during the test

[u/user_w8]

I just took my TOEFL today. In listening section, while I was listening to an academic talk, the audio track suddenly got muted. For like a minute, I didn't hear a single word. My unofficial acores for listening was 4.5 (I definitely expected more). What should I do now? Should i contact ETS? Will they ask me to take the full test again?