okteta 0.26.4: self tests 53 and 54 fails

Context: voidlinux distribution on x86_64 with musl libc, GCC 9.3, Qt 5.15.1.

building of okteta 0.26.4 is fine.

internal tests are run without graphical display: using " export QT_QPA_PLATFORM=offscreen "

internal tests #53 and #54 fail:

build and test output:

[100%] Linking CXX executable ../bin/okteta
[100%] Built target okteta
=> okteta-0.26.4_1: running pre_check ...
=> okteta-0.26.4_1: running do_check ...
Running tests...
Test project /builddir/okteta-0.26.4/build
      Start  1: appstreamtest
 1/57 Test  #1: appstreamtest ............................................................   Passed    0.01 sec
      Start  2: libkasten-core-testdocumenttest
[...]
      Start 53: structures-jsparsertest
53/57 Test #53: structures-jsparsertest ..................................................***Failed    0.02 sec
********* Start testing of JsParserTest *********
Config: Using QtTest library 5.15.1, Qt 5.15.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 9.3.0)
WARNING: JsParserTest::initTestCase() testdata resources could not be located!
   Loc: [../../../kasten/controllers/test/jsparsertest.cpp(118)]
WARNING: JsParserTest::initTestCase() testdata ../view/structures/examples could not be located!
   Loc: [../../../kasten/controllers/test/jsparsertest.cpp(119)]
FAIL!  : JsParserTest::initTestCase() '!resources.isEmpty()' returned FALSE. (Test data must exist!)
   Loc: [../../../kasten/controllers/test/jsparsertest.cpp(120)]
PASS   : JsParserTest::cleanupTestCase()
Totals: 1 passed, 1 failed, 0 skipped, 0 blacklisted, 1ms
********* Finished testing of JsParserTest *********

      Start 54: structures-customtostringtest
54/57 Test #54: structures-customtostringtest ............................................***Failed    0.02 sec
********* Start testing of CustomToStringTest *********
Config: Using QtTest library 5.15.1, Qt 5.15.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 9.3.0)
WARNING: CustomToStringTest::initTestCase() testdata ../view/structures/examples could not be located!
   Loc: [../../../kasten/controllers/test/customtostringtest.cpp(55)]
FAIL!  : CustomToStringTest::initTestCase() '!examples.isEmpty()' returned FALSE. (Test data must exist!)
   Loc: [../../../kasten/controllers/test/customtostringtest.cpp(56)]
PASS   : CustomToStringTest::cleanupTestCase()
Totals: 1 passed, 1 failed, 0 skipped, 0 blacklisted, 0ms
********* Finished testing of CustomToStringTest *********

      Start 55: structures-locktooffsettest
55/57 Test #55: structures-locktooffsettest ..............................................   Passed    0.02 sec
      Start 56: replacejobtest
56/57 Test #56: replacejobtest ...........................................................   Passed    0.06 sec
      Start 57: kpart-oktetaparttest
57/57 Test #57: kpart-oktetaparttest .....................................................   Passed    0.08 sec

96% tests passed, 2 tests failed out of 57

Total Test time (real) =   1.12 sec

The following tests FAILED:
	 53 - structures-jsparsertest (Failed)
	 54 - structures-customtostringtest (Failed)
Errors while running CTest
make: *** [Makefile:127: test] Error 8

Edit: append end of output