Why couldn't I open file?

Question

Hi, I input a data file, then when I run this trained model, it says:

[1] "Loading variable port1..."
[Information] package 'magrittr' successfully unpacked and MD5 sums checked
[Information] package 'xgboost' successfully unpacked and MD5 sums checked
[Information] Warning messages:
[Information] 1: In eval(ei, envir) : NAs introduced by coercion
[Information] 2: In eval(ei, envir) : NAs introduced by coercion
[Stop] DllModuleMethod::Execute. Duration = 00:01:00.8680701
[Critical] Error: Error 0063: The following error occurred during evaluation of R script:
---------- Start of error message from R ----------
can not open file "9c40b049d4c7d584393d08195471b7e"

can not open file "9c40b049d4c7d584393d08195471b7e"
----------- End of error message from R -----------

I cut the big file to 600 recrods and re-run it, this time:
[1] "Loading variable port1..."
[Information] [1] "before install packages"
[Information] package 'magrittr' successfully unpacked and MD5 sums checked
[Information] package 'xgboost' successfully unpacked and MD5 sums checked
[Information] [1] "after load packages..."
[Information] Warning message:
[Information] In eval(ei, envir) : NAs introduced by coercion
[Stop] DllModuleMethod::Execute. Duration = 00:00:08.6862974
[Critical] Error: Error 0063: The following error occurred during evaluation of R script:
---------- Start of error message from R ----------
can not open file "1"

can not open file "1"
----------- End of error message from R -----------

What is the problem?

Plz help asap!

Answer 1

I deleted some columns, it worked.

Thanks!