Code Error

[Arcian 0]

Error description: Prevents the project from opening correctly.

___________________________________________
############################################################################################
ERROR in
action number 1
of  Step Event0
for object app:

Cannot apply sqrt to negative number.
############################################################################################
--------------------------------------------------------------------------------------------
called from - gml_Script_particle_spawner_spawn (line 102)
called from - gml_Script_particle_spawner_update (line 65)
called from - gml_Script_app_update_animate (line 44)
called from - gml_Script_app_event_step (line 19)
called from - gml_Object_app_Step_0 (line 0)
 

 

[Arcian 0]

How to fix it?