test errors on ubuntu 20.04

[quimpg]

I got several errors when I try to install the package on ubuntu 20.04

Any idea of the reason?

t/core.t ...... 1/?
Failed test 'Invalid object sent for serialization returns undef' at t/core.t line 54.
got: '"asdf"'
expected: undef
Failed test 'Bad encode sets proper errstr' at t/core.t line 55.
got: ''
expected: 'hash- or arrayref expected (not a simple scalar, use allow_nonref to allow this)'
Looks like you failed 2 tests of 24. t/core.t ...... Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/24 subtests

t/requests.t .. 1/?
Failed test 'Scalar context for /put_invalid_json bails before request' at t/requests.t line 17.
Structures begin differing at:
$got->{code} = 'success'
$expected->{code} = Does not exist

Failed test 'List context HTTP Code for /put_invalid_json bails before request should return 500' at t/requests.t line 19.
got: '200'
expected: '500'
Failed test 'List context response for /put_invalid_json bails before request' at t/requests.t line 20.
Structures begin differing at:
$got->{code} = 'success'
$expected->{code} = Does not exist
Looks like you failed 3 tests of 35.
t/requests.t .. Dubious, test returned 3 (wstat 768, 0x300)

[Ovid]

I'm getting the same errors on macOS Monterey, version 12.4. Perl version 5.26.3.

[eritain]

Same here, Ubuntu Xenial, Perl 5.22.

These tests expect that JSON->to_json() will refuse to encode a bare string, but it does that now, so they break.

[eritain]

This is #4 again.