[From string (line 4) ]                          
                                                 
@startuml                                        
rectangle name <<stereotypename>> #808080 [      
Thisisfine                                       
]                                                
rectangle asddd <<ewrwerwer>> #808080 [          
AlsoFine                                         
]                                                
rectangle asddd <<ewrwerwer>> $background_color [
^^^^^                                            
 Syntax Error?