Warning: Selected joint type will result in conflict (it says this)

[aarbon001]

I was designing a DH bike frame on fusion 360 and I needed to check how was the suspension system reacting so  I did a joint system to look the movement, but when I was doing the last joint, in the program popped up this error: "Warning: Selected joint type will result in conflict" and it didn't let me move the desgin. Would anyone be kind enough to check my design and tell me what am I doing wrong please?

Here is the link to my design: https://a360.co/4cMOHUp

[jhackney1972 · Accepted solution]

You can make one side work by using a Cylindrical Joint for the last connection.  There is an alignment problem along the axis that prevents the use of a Revolve Joint.  As far as the other side, you are going to have a difficult time creating any type of rotating joint as the upper end hole of the mechanism is NOT Round.  The model with the one side fixed is attached.