I could not find any useful information about instability errors (1,2,3)
I am currently designing this simple structure but when I calcualte it repeatedly shows Instability errors in nodes 21 and 16 in direction RY. could not figure out how to deal with this error, so looking for some help here! I used the structure form library and released moments in the diagonal bars for a structure type 2d frame is being used.
Thank you in advance!