* using log directory 'd:/RCompile/CRANincoming/R-devel/nnR.Rcheck'
* using R Under development (unstable) (2024-02-05 r85863 ucrt)
* using platform: x86_64-w64-mingw32
* R was compiled by
    gcc.exe (GCC) 12.3.0
    GNU Fortran (GCC) 12.3.0
* running under: Windows Server 2022 x64 (build 20348)
* using session charset: UTF-8
* checking for file 'nnR/DESCRIPTION' ... OK
* checking extension type ... Package
* this is package 'nnR' version '0.1.0'
* package encoding: UTF-8
* checking CRAN incoming feasibility ... NOTE
Maintainer: 'Shakil Rafi <sarafi@uark.edu>'

New submission

Possibly misspelled words in DESCRIPTION:
  nnR (3:8)

Found the following (possibly) invalid DOIs:
  DOI: s10444-022-09970-2
    From: man/inst.Rd
    Message: Invalid DOI

The Title field starts with the package name.

Found the following URLs which should use \doi (with the DOI name only):
  File 'comp.Rd':
    https://doi.org/10.1007/s10444-022-09970-2
  File 'create_neural_network.Rd':
    https://doi.org/10.1007/s10444-022-09970-2
  File 'is_nn.Rd':
    https://doi.org/10.1007/s10444-022-09970-2
  File 'nn_sum.Rd':
    https://doi.org/10.1007/s10444-022-09970-2
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking serialization versions ... OK
* checking whether package 'nnR' can be installed ... OK
* checking installed package size ... OK
* checking package directory ... OK
* checking for future file timestamps ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking for left-over files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking R files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... OK
* checking whether the package can be loaded with stated dependencies ... OK
* checking whether the package can be unloaded cleanly ... OK
* checking whether the namespace can be loaded with stated dependencies ... OK
* checking whether the namespace can be unloaded cleanly ... OK
* checking loading without being on the library search path ... OK
* checking use of S3 registration ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... OK
* checking Rd files ... OK
* checking Rd metadata ... OK
* checking Rd line widths ... OK
* checking Rd cross-references ... OK
* checking for missing documentation entries ... OK
* checking for code/documentation mismatches ... OK
* checking Rd \usage sections ... OK
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... OK
* checking examples ... NONE
* checking for unstated dependencies in 'tests' ... OK
* checking tests ... [174s] OK
  Running 'testthat.R' [173s]
* checking PDF version of manual ... [11s] WARNING
LaTeX errors when creating PDF version.
This typically indicates Rd problems.
LaTeX errors found:
! Missing $ inserted.
<inserted text> 
                $
l.187 }{}
         
! Missing } inserted.
<inserted text> 
                }
l.187 }{}
         
! Display math should end with $$.
<to be read again> 
                   \tex_par:D 
l.187 }{}
         
! Extra }, or forgotten \endgroup.
\par ...m \@noitemerr {\@@par }\fi \else {\@@par }
                                                  \fi 
l.187 }{}
         
! LaTeX Error: Bad math environment delimiter.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Missing $ inserted.
<inserted text> 
                $
l.187 }{}
         
! Display math should end with $$.
<to be read again> 
                   \endgroup 
l.187 }{}
         
! Missing $ inserted.
<inserted text> 
                $
l.292 }{}
         
! Missing } inserted.
<inserted text> 
                }
l.292 }{}
         
! Display math should end with $$.
<to be read again> 
                   \tex_par:D 
l.292 }{}
         
! Extra }, or forgotten \endgroup.
\par ...m \@noitemerr {\@@par }\fi \else {\@@par }
                                                  \fi 
l.292 }{}
         
! LaTeX Error: \mathsf allowed only in math mode.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Missing $ inserted.
<inserted text> 
                $
l.292 }{}
         
! Undefined control sequence.
<argument>  \par \mathsf {NN} = \bigcup _{L\in \N 
                                                  } \bigcup _{l_0,l_1,...,l_...
l.292 }{}
         
! Undefined control sequence.
<argument> ... } \bigcup _{l_0,l_1,...,l_L \in \N 
                                                  ^{L+1}} \left ( \times ^L_...
l.292 }{}
         
! Missing $ inserted.
<inserted text> 
                $
l.292 }{}
         
! Missing } inserted.
<inserted text> 
                }
l.292 }{}
         
! Extra }, or forgotten \endgroup.
\par ...m \@noitemerr {\@@par }\fi \else {\@@par }
                                                  \fi 
l.292 }{}
         
! LaTeX Error: Bad math environment delimiter.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Missing $ inserted.
<inserted text> 
                $
l.292 }{}
         
! Display math should end with $$.
<to be read again> 
                   \endgroup 
l.292 }{}
         
! Undefined control sequence.
<argument>  \mathsf {NN} = \bigcup _{L\in \N 
                                             } \bigcup _{l_0,l_1,...,l_L \in...
l.630 }{}
         
! Undefined control sequence.
<argument> ... } \bigcup _{l_0,l_1,...,l_L \in \N 
                                                  } \left ( \times ^L_{k=1} ...
l.630 }{}
         
! Missing $ inserted.
<inserted text> 
                $
l.693 }{}
         
! Missing } inserted.
<inserted text> 
                }
l.693 }{}
         
! Display math should end with $$.
<to be read again> 
                   \tex_par:D 
l.693 }{}
         
! Extra }, or forgotten \endgroup.
\par ...m \@noitemerr {\@@par }\fi \else {\@@par }
                                                  \fi 
l.693 }{}
         
! LaTeX Error: Bad math environment delimiter.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Missing $ inserted.
<inserted text> 
                $
l.693 }{}
         
! Display math should end with $$.
<to be read again> 
                   \endgroup 
l.693 }{}
         
! Undefined control sequence.
<argument>  \oplus ^v_{i=u}\nu _i \coloneqq 
                                            \left ( \mathsf {Sum}_{v-u+1,\ma...
l.732 }{}
         
* checking PDF version of manual without index ... ERROR
* checking HTML version of manual ... OK
* DONE
Status: 1 ERROR, 1 WARNING, 1 NOTE