A/C Discharge line popped off?

[Mazune]

Hello everyone, I have a 93 HB with a 'minime' engine and after driving it for less than 5 mins the a/c discharge line just popped off,made a hissing sound and leaked the bright green coolant everywhere. Is this a common thing with these cars? Other than a not working a/c most likely, what else should I expect?
The part in the red circle is what popped off, I haven't been able to find any info

 

[Mazune]

Yes, everything has been working fine for a few months, this happened out of nowhere.

 

[Mazune]

This is the picture