Error solving nonlinear boundary value problem / worked in a previous version of Julia 111 and Approxfun

I try to solve the following nonlinear Differential Equation/Boundary Value Problem:
y'''' + 4.0*y'''/x = 0
with the following boundary conditions
y(0) = y'(0) = 0 y''(1)=0 y'''(1)=1

in a previous version the following solution worked:
using ApproxFun
x = Fun(identity,0..5)
u0 = 0.0x
N = u->[u(0), u'(0), u''(1), u'''(1)-1, u''''+4*u^3/x]
u = newton(N,u0)
Warning: Maximum numer of iterations 15 reached, with approximate accuracy of 1.439e-13

the results were ok

if I try to solve the same problem with the latest version
I rceive the following error messages:
ERROR: AssertionError: abs(first(g)) < tol
Stacktrace:

if I change the statement N = u-> (because of singularity at x=0) to
N = u->[u(0), u'(0), u''(1), u'''(1)-1,
if x<1e-4 u''''+12*y'y^2 else u''''+4u^3/x end]
u = newton(N,u0)
I receive the same error message
ERROR: AssertionError: abs(first(g)) < tol
Stacktrace:

Can anybody help me

Start by reproducing the nonlinear boundary value problem with ApproxFun's newton entry point and inspect the omitted assertion stacktrace. Compare the previous and latest versions around the singular expression at x=0; done means the supplied problem solves without AssertionError: abs(first(g)) < tol.