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Manipulate a VectorFieldPlot3D

I would like to 3D plot two time dependent fields E and B.
I have two questions about the current state of my notebook:

 Why the options Axes and AxesLabel produce an error, while producing
the expected behaviour (adding the axes label!)

 How can I have a Manipulate object that would allow me to scan over time?

Thanks for your help!

<< PhysicalConstants`
c = 299792458;(*SpeedOfLight*)
\[Mu] = \[Pi]/2500000;(*VacuumPermeability*)
\[Epsilon] = 8.854187817`*^-12;(*VacuumPermittivity*)
\[Omega] = 1;(*Angular speed*)
p = 1;(*Unit dipole moment*)
k = \[Omega]/c;(*Norm of the wave vector*)
r = Norm[{x, y, z}];(*Norm of the position vector*)
t = 10;(*Time*)
a = 10;


Ex = (y^2 + z^2) Cos[\[Omega] Dynamic[t] - k r] - x y Sin[\[Omega]
Dynamic[t] - k r];
Ey = (x^2 + z^2) Sin[\[Omega] Dynamic[t] - k r] - x y Cos[\[Omega]
Dynamic[t] - k r];
Ez = z (x Cos[\[Omega] Dynamic[t] - k r] + y Sin[\[Omega] Dynamic[t] - k

Bx = -z Sin[\[Omega] Dynamic[t] - k r];
By = z Cos[\[Omega] Dynamic[t] - k r];
Bz = x Sin[\[Omega] Dynamic[t] - k r] - y Cos[\[Omega] Dynamic[t] - k r];

   (\[Omega]^2 p / 4 \[Pi] \[Epsilon] c^2 r^3) {
     Ex, Ey, Ez
   , {x, -a, a}, {y, -a, a}, {z, -a, a}
   , VectorHeads -> True
   , Axes -> True
   , AxesLabel -> {x, y, z}

   (\[Mu] \[Omega]^2 p / 4 \[Pi] c r^2) {
     Bx, By, Bz
   , {x, -a, a}, {y, -a, a}, {z, -a, a}
   , VectorHeads -> True
   , Axes -> True
   , AxesLabel -> {x, y, z}

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