What is the meaning of Mark 14:55?

And the chief priests and all the council sought for witness against Jesus to put him to death; and found none. (Mark 14:55 KJV)

Now the chief priests and the whole council sought witness against Jesus to put him to death; and found it not. (Mark 14:55 ASV)

And the chief priests and the whole sanhedrim sought testimony against Jesus to cause him to be put to death, and did not find [any]. (Mark 14:55 DBY)

And the chief priests and all the sanhedrim were seeking against Jesus testimony–to put him to death, and they were not finding, (Mark 14:55 YLT)

Now the chief priests and the whole council sought witnesses against Jesus to put him to death, and found none. (Mark 14:55 WEB)

Interlinear

And <de> the chief priests <archiereus> and <kai> all <holos> the council <sunedrion> sought <zeteo> for witness <marturia> against <kata> Jesus <Iesous> to <eis> put <thanatoo> him <autos> to death; <thanatoo> and <kai> found <heurisko> none. <ou> (Mark 14:55 KJV)

Jamieson Fausset Brown

But let the reader observe, that though this is introduced by the Evangelist before any of the denials of Peter are recorded, we have given reasons for concluding that probably the first two denials took place while our Lord was with Annas, and the last only during the trial before the Sanhedrim.

And the chief priests and all the council sought for witness against Jesus to put him to death–Matthew (Mt 26:59) says they “sought false witness.” They knew they could find nothing valid; but having their Prisoner to bring before Pilate, they behooved to make a case.

and found none–none that would suit their purpose, or make a decent ground of charge before Pilate.