[Bug Report] Error in the console if the title is empty

**Describe the bug**
(Sorry for my english, i'm french. I learn) The bot makes an error when the nowplaying command is executed, it doesn't reply if the title is empty.

**To Reproduce**
Steps to reproduce the behavior:
1. Play this link (Radio, NRJ France) : https://f5-pa6-2.nrjaudio.fm/fr/30001/mp3_128.mp3?origine=radio.net&cdn_path=adswizz_lbs7&access_token=0e72ef4e6f454f58925e29309020318d
2. Send the nowplaying command. The bot will not respond.
3. See the console

**Expected behavior**
The bot should answer the command, even if there is no title, or, give a temporary title. Like "No title".

**Screenshots**
When i add the song :
When i execute the np command :

**Debug Info**
```
System Properties:
java.version = 11.0.11
java.vm.name = OpenJDK 64-Bit Server VM
java.vm.specification.version = 11
java.runtime.name = OpenJDK Runtime Environment
java.runtime.version = 11.0.11+9-Ubuntu-0ubuntu2.20.10
java.specification.version = 11
os.arch = amd64
os.name = Linux

JMusicBot Information:
Version = 0.3.4
Owner = 572651719109115904
Prefix = ;
AltPrefix = @mention
MaxSeconds = 0
NPImages = false
SongInStatus = false
StayInChannel = false
UseEval = true
UpdateAlerts = true

Dependency Information:
JDA Version = 4.2.1_253
JDA-Utilities Version = 3.0.5
Lavaplayer Version = 1.3.75

Runtime Information:
Total Memory = 37
Used Memory = 21

Discord Information:
ID = 776019442538643476
Guilds = 8
Users = 3
```

**Additional context**
none.

Thanks to everyone for contributing to this great project!

Start by reproducing the issue with the provided NRJ France stream and the nowplaying command, then trace the command's handling of a missing title and the console error shown in the report. Done means nowplaying responds normally when the track has no title, using either a fallback title or another valid response.

Written by the indexing model from the issue text.