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I am trying to factor a division polynomial on a number field and I get the following error. "PariError: inconsistent concatenation t_COL (16 elts) , t_VEC (8 elts)" Could you please tell me how I can rectify it?

Thank you very much in advance!

Here is the code I am trying to compile:

K.<rho> = NumberField(x^16 - 7x^12 + 48x^8 - 7x^4 + 1) Kx.<x> = K[] P = 2x^24 - 220779/1250x^22 + 10143441/15625x^21 - 142856857143/25000000x^20 + 131732868267/19531250x^19 + 31020130846593/5000000000x^18 + 13930920190065879/1562500000000x^17 - 421500204770774287041/5000000000000000x^16 - 31485474287738310861/976562500000000x^15 + 2518173788725346513398533/6250000000000000000x^14 - 582641643196535738602059/3125000000000000000x^13 - 73639749524289565897523550321/125000000000000000000000x^12 + 20820019744955833474743619767/48828125000000000000000x^11 + 300689661910158431801904075908157/625000000000000000000000000x^10 - 4454385478020717587635582204420833/7812500000000000000000000000x^9 + 16361877508124295728413974125123451/400000000000000000000000000000x^8 + 1573027301404166809168217933184311901/9765625000000000000000000000000x^7 - 11987294796540068181333112421577867214431/125000000000000000000000000000000000x^6 + 113700674422931989849194398791831231927941/1562500000000000000000000000000000000x^5 - 168139864900386988616344904823569275391618007/2500000000000000000000000000000000000000x^4 + 2632186130949079940307397635576696383706753/78125000000000000000000000000000000000x^3 - 116064304293562967834364362386796558774110963539/12500000000000000000000000000000000000000000x^2 + 206061630034967578571315740889755584982886782011/156250000000000000000000000000000000000000000x - 30099620598750107945851944211328293200688722593391/500000000000000000000000000000000000000000000000

print P.parent()==Kx

print P.roots()