Statistics: Model class (with restraints) from pdb  failed.

/net/marbles/raid1/dorothee/rerefine/cryoem/data_no_H/6lhu_0899/12_2022/6lhu_0899.pdb /net/marbles/raid1/dorothee/rerefine/cryoem/data_no_H/6lhu_0899/12_2022/6lhu_0899.map 3.46
Traceback (most recent call last):
  File "/net/marbles/raid1/dorothee/rerefine/cryoem/rerefine_script.py", line 345, in get_statistics
    model.process(make_restraints=True)
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4807/modules/cctbx_project/mmtbx/model/model.py", line 1875, in process
    run_clash_guard           = run_clash_guard)
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4807/modules/cctbx_project/mmtbx/model/model.py", line 1935, in _setup_restraints_manager
    assume_hydrogens_all_missing = not self.has_hd())
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4807/modules/cctbx_project/mmtbx/monomer_library/pdb_interpretation.py", line 5844, in geometry_restraints_manager
    log=self.log)
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4807/modules/cctbx_project/mmtbx/monomer_library/pdb_interpretation.py", line 5540, in construct_geometry_restraints_manager
    verbose=True,
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4807/modules/cctbx_project/mmtbx/conformation_dependent_library/__init__.py", line 387, in update_restraints
    esd_factor=esd_factor,
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4807/modules/cctbx_project/mmtbx/conformation_dependent_library/multi_residue_cdl_class.py", line 321, in apply_updates
    ''' % ''.join(error_atoms))
Sorry: 
  Certain angles in the protein chain (C-N-H or CA-N-H) have not been found
  in the restraints by the Conformational Dependent Library. This usually
  means that the protein backbone is traversing a special position.

  This is unlikely.

  However, to proceed, set cdl=False.

"ATOM   1502  N   ARG B 644 .*.     N  "
"ATOM   1503  CA  ARG B 644 .*.     C  "
"ATOM   1504  C   ARG B 644 .*.     C  "
"ATOM   1505  O   ARG B 644 .*.     O  "
"ATOM   1506  CB  ARG B 644 .*.     C  "
"ATOM   1507  H   ARG B 644 .*.     H  "
"ATOM   1511  N   PRO B 645 .*.     N  "
"ATOM   1512  CA  PRO B 645 .*.     C  "
"ATOM   1513  C   PRO B 645 .*.     C  "
"ATOM   1514  O   PRO B 645 .*.     O  "
"ATOM   1515  CB  PRO B 645 .*.     C  "
"ATOM   1516  H   PRO B 645 .*.     H  "