Julia Eror: ERROR: LoadError: MethodError: no method matching

When I try to compile this in Julia, I receive this error :

closure2 ERROR: LoadError: MethodError: no method matching
Vector{Float64}})(::Tuple{Vector{Float64}, Vector{Float64}}) Closest
candidates are: (::var"#closure2#3")(::Any, ::Any) at
c:\Users\ABD\Downloads\df\GP (2).jl:150

function L_alpha_1d(w_train,k_train,theta, p)
    n0 = length(w_train);
    K_00_temp = [square_exp(x1,x2,theta,p) for x1 in k_train, x2 in k_train];
    log_m_like = -1/2 *transpose(w_train) * pinv(K_00_temp) * w_train - 1/2 * log(abs(det(K_00_temp))) - n0/2 * log(2*pi) ;

    return log_m_like

function make_closures(w_train,b_train)
    # this is line 150
    closure2(theta, p) = -L_alpha_1d(w_train,b_train,theta, p) 
    return closure2

# make_closures(w_train,b_train) = (theta, p) -> -L_alpha_1d(w_train,b_train,theta, p)
nll = make_closures(w_train,b_train)
theta0 = zeros(length(w_train) + 1) # d = 2 and we want an intercept term
p0 = zeros(length(w_train) + 1)

Backdrop-filter not working for extended navbar

I’m trying to give blur and glass effect for Navbar, it’s working for top section navbar but for mobile navbar when clicked on menu icon drop-down the blur effect is not working
enter image description here enter image description here

This is the class I’ve added to the navbar

    font-family: 'Kizard';
    font-size: 1rem;
    background-color: rgba(248, 237, 227, 0.4);
    backdrop-filter: blur(0.6rem);

I tried using webkit and other things still didn’t worked