contains-string fails in eo repo

[levBagryansky]

The test below is fails in eo repository.

[] > catch-contains-string
  assert-that > @
    "abpba"
    $.contains-string
      "aboba"

with error

org.eolang.ExUnset: Error at "memory.enclosure" attribute
        at org.eolang.AtNamed.get(AtNamed.java:99)
        at org.eolang.PhDefault.attr(PhDefault.java:263)
        at org.eolang.PhLocated.attr(PhLocated.java:117)
        at org.eolang.PhOnce.attr(PhOnce.java:91)

@Graur please take a look

[Graur]

@levBagryansky Indeed, it's a bug. Thanks!

[0pdd]

@levBagryansky the puzzle #215 is still not solved.

[0pdd]

@levBagryansky the only puzzle #215 is solved here.