ERROR: MethodError: no method matching div(::PolyForm{Real}, ::Rational{Int64}, ::RoundingMode{:ToZero}) coming from simplify_fractions`

[ranocha]

I got this error in CI at ranocha/BSeries.jl#160. The code used to work with earlier versions of Symbolics.jl and its dependencies. A kind of MWE is

julia> using Pkg; Pkg.activate(temp = true); Pkg.add("Symbolics")
...
  [0c5d862f] + Symbolics v5.5.3

julia> using Symbolics

julia> simplify_fractions((u1 * u2 + (1//2) * u1) / (2 * u1))
ERROR: MethodError: no method matching div(::PolyForm{Real}, ::Rational{Int64}, ::RoundingMode{:ToZero})
...
Stacktrace:
  [1] div(a::PolyForm{Real}, b::Rational{Int64})
    @ Base ./div.jl:47
  [2] rm_gcds(ns::Vector{PolyForm{Real}}, ds::Vector{Any})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/YVse6/src/polyform.jl:537
  [3] simplify_div(d::SymbolicUtils.BasicSymbolic{Real})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/YVse6/src/polyform.jl:275
  [4] (::SymbolicUtils.var"#sdiv#133")(a::SymbolicUtils.BasicSymbolic{Real})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/YVse6/src/polyform.jl:328
  [5] call_composed
    @ ./operators.jl:1034 [inlined]
  [6] (::ComposedFunction{SymbolicUtils.var"#sdiv#133", typeof(quick_cancel)})(x::SymbolicUtils.BasicSymbolic{Real}; kw::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Base ./operators.jl:1031
  [7] (::ComposedFunction{SymbolicUtils.var"#sdiv#133", typeof(quick_cancel)})(x::SymbolicUtils.BasicSymbolic{Real})
    @ Base ./operators.jl:1031
  [8] (::SymbolicUtils.Rewriters.Walk{:post, ComposedFunction{SymbolicUtils.var"#sdiv#133", typeof(quick_cancel)}, typeof(SymbolicUtils.frac_similarterm), false})(x::SymbolicUtils.BasicSymbolic{Real})
    @ SymbolicUtils.Rewriters ~/.julia/packages/SymbolicUtils/YVse6/src/rewriters.jl:200
  [9] simplify_fractions(x::SymbolicUtils.BasicSymbolic{Real}; polyform::Bool)
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/YVse6/src/polyform.jl:330
 [10] simplify_fractions(x::SymbolicUtils.BasicSymbolic{Real})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/YVse6/src/polyform.jl:322
 [11] simplify_fractions(n::Num; kw::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Symbolics ~/.julia/packages/Symbolics/rvztO/src/Symbolics.jl:147
 [12] simplify_fractions(n::Num)
    @ Symbolics ~/.julia/packages/Symbolics/rvztO/src/Symbolics.jl:147
 [13] top-level scope
    @ REPL[5]:1

[shashi]

Thank you!