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

/net/marbles/raid1/dorothee/rerefine/cryoem/data_no_H/6dr2_7988/05_2022/6dr2_7988.pdb /net/marbles/raid1/dorothee/rerefine/cryoem/data_no_H/6dr2_7988/05_2022/6dr2_7988.map 4.33
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-4597/modules/cctbx_project/mmtbx/model/model.py", line 1815, in process
    run_clash_guard           = run_clash_guard)
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4597/modules/cctbx_project/mmtbx/model/model.py", line 1875, in _setup_restraints_manager
    assume_hydrogens_all_missing = not self.has_hd())
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4597/modules/cctbx_project/mmtbx/monomer_library/pdb_interpretation.py", line 5813, in geometry_restraints_manager
    log=self.log)
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4597/modules/cctbx_project/mmtbx/monomer_library/pdb_interpretation.py", line 5511, in construct_geometry_restraints_manager
    verbose=True,
  File "/net/cci-filer2/raid1/xp/phenix/phenix-dev-4597/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-4597/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  20135  N   ASP A1435 .*.     N  "
"ATOM  20136  CA  ASP A1435 .*.     C  "
"ATOM  20137  C   ASP A1435 .*.     C  "
"ATOM  20138  O   ASP A1435 .*.     O  "
"ATOM  20139  CB  ASP A1435 .*.     C  "
"ATOM  20140  H   ASP A1435 .*.     H  "
"ATOM  20144  N   PRO A1436 .*.     N  "
"ATOM  20145  CA  PRO A1436 .*.     C  "
"ATOM  20146  C   PRO A1436 .*.     C  "
"ATOM  20147  O   PRO A1436 .*.     O  "
"ATOM  20148  CB  PRO A1436 .*.     C  "
"ATOM  20149  H   PRO A1436 .*.     H  "