Stair repair

[Jase pank]

Evening...
Anyone got any ideas what best to do.... the risers are cracked. I have access now from the underside. Several glue blocks are not connected.
Pics attached
Thanks in advance

 

[sircerebus666]

Think my old age is making me go blind , I can't see no cracks in the risers...

Glue the glue blocks back on

 

[JobAndKnock]

Maybe some slight cracking just above where the bottom edge of the riser is screwed into the back of the tread in photo 2? Either way doesn't look to be an issue

 

[screamer]

if it bothers you that much, cut 9/12mm plywood to the riser size, glue & screw it to the back of the risers and use longer screws into the tread