Changed fuel Filter now its stuffed

So changed fuel filter didn't fill the new fuel filter with diesel all the way to top them primed it heard the pump started the car all good then 2 mins later it dies so i know there is an air lock somewhere in system but i dont where the bleed nipple/valve is or if there even is one

tried to prime/purge it again and crank to bleed the air outta but to no luck

and m/s have started flashing meaning a fault of some kind and now the fuel pump isnt working as probaly due to low battery

anyone know how to get this air lock outta the system and what the fault codes could mean

cheers for the help

Sure there's an auto priming procedure on the TD5, .......from a previous post after a quick google......

Correct way of priming is, turn ignition on and wait for pump to stop running, then pump throttle pedal fully up and down five times. Pump will now run on and off for a couple of minutes. Key off, throttle pedal on the floor and start.

https://www.landyzone.co.uk/land-ro...rect way of priming is,on the floor and start.

ye but how do i now bleed the air outta the system as ive been priming it off and on for 20mins and yet still wont start
is there and easier way to bleed the air out maybe a bleed nut or nipple along the fuel lines as i cannot get fuel past the air lock and i can seem to bleed the air outta
do i need to open the fuel cap when priming to let the air out?