Diagram file not opening

[jayman groupecingle com]

Hi. I'm trying to open a diagram file, but it won't open.

Here's the output from Terminal (I'm running Ubuntu 18.04) : 

/home/jayman/Dropbox/stand_up/adventures_jayman/ADVENTURES OF
JAYMAN/02_valentina_destroy.dia:9375: parser error : Premature end of
data in tag composite line 9367
          </dia:attribute>
                          ^
/home/jayman/Dropbox/stand_up/adventures_jayman/ADVENTURES OF
JAYMAN/02_valentina_destroy.dia:9375: parser error : Premature end of
data in tag attribute line 9366
          </dia:attribute>
                          ^
/home/jayman/Dropbox/stand_up/adventures_jayman/ADVENTURES OF
JAYMAN/02_valentina_destroy.dia:9375: parser error : Premature end of
data in tag object line 9328
          </dia:attribute>
                          ^
/home/jayman/Dropbox/stand_up/adventures_jayman/ADVENTURES OF
JAYMAN/02_valentina_destroy.dia:9375: parser error : Premature end of
data in tag layer line 87
          </dia:attribute>
                          ^
/home/jayman/Dropbox/stand_up/adventures_jayman/ADVENTURES OF
JAYMAN/02_valentina_destroy.dia:9375: parser error : Premature end of
data in tag diagram line 2
          </dia:attribute>
                          ^

Other diagram files are opening just fine.

Is there, please oh please, a way to recover this file?