"GAP precedes node" critical warning after lock_design command"
After implementing my design in a constrained Pblock, I lock my design using lock_design -level routing -export command, save the constraints , and re-implement it and I get this critical warning.
[Designutils 20-2257] A GAP precedes node 'CLEL_R_X16Y6/CLE_CLE_L_SITE_0_E_O' which is the start of a branch. A GAP node cannot precede the start of a new branch. To remedy this push the GAP into the branch. ["/<dir>/constraints.xdc":2]