! Undefined control sequence.
GenericError  ...
                                                    #4  errhelp @err@     ...
l.26054   __tl_tmp:w c__tl_i_ogonek_tl  { 012F }

The control sequence at the end of the top line
of your error message was never def'ed. If you have
misspelled it (e.g., `hobx'), type `I' and the correct
spelling (e.g., `Ihbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

! Undefined control sequence.
GenericError  ...
                                                  let @err@               ...
l.26054   __tl_tmp:w c__tl_i_ogonek_tl  { 012F }

The control sequence at the end of the top line
of your error message was never def'ed. If you have
misspelled it (e.g., `hobx'), type `I' and the correct
spelling (e.g., `Ihbox'). Otherwise just continue,
and I'll forget about whatever was undefined.