ERROR AutoClass C executable not found in path

[PeterPirog]

I have problem with error: AutoClass C executable not found in path!
My OS is Ubuntu 20.04, file /autoclass-c$ autoclass exists and I can call it:

AUTOCLASS C (version 3.3.6unx)

 AutoClass Search: 
      > autoclass -search <.db2[-bin] file path> <.hd2 file path>
             <.model file path> <.s-params file path> 

 AutoClass Reports: 
      > autoclass -reports <.results[-bin] file path> <.search file path> 
             <.r-params file path> 

 AutoClass Prediction: 
      > autoclass -predict <test.. .db2 file path>
             <training.. .results[-bin] file path>
             <training.. .search file path> <training.. .r-params file path> 

but script can't see executable file. I added chmod 777 but it nothing changes. I will be grateful for any suggestions.

Peter

Python: 3.8.10 (default, Jul 14 2021, 14:06:22) 
[GCC 9.3.0]
matplotlib: 3.4.3
numpy: 1.21.2
pandas: 1.3.2
AutoClassWrapper: 1.5.1
2021-08-26 19:36:36 INFO     Reading data file 'demo_real_scalar.tsv' as 'real scalar' with error 0.01
2021-08-26 19:36:36 INFO     Detected encoding: ascii
2021-08-26 19:36:36 INFO     Found 300 rows and 2 columns
2021-08-26 19:36:36 DEBUG    Checking column names
2021-08-26 19:36:36 DEBUG    Index name 'name'
2021-08-26 19:36:36 DEBUG    Column name 'x'
2021-08-26 19:36:36 INFO     Checking data format
2021-08-26 19:36:36 INFO     Column 'x'
2021-08-26 19:36:36 INFO     count    300.000000
2021-08-26 19:36:36 INFO     mean       4.321810
2021-08-26 19:36:36 INFO     std        1.410835
2021-08-26 19:36:36 INFO     min        1.604192
2021-08-26 19:36:36 INFO     50%        3.983164
2021-08-26 19:36:36 INFO     max        7.377156
2021-08-26 19:36:36 INFO     ---
2021-08-26 19:36:36 INFO     Reading data file 'demo_real_location.tsv' as 'real location' with error 0.01
2021-08-26 19:36:36 INFO     Detected encoding: ascii
2021-08-26 19:36:36 INFO     Found 300 rows and 2 columns
2021-08-26 19:36:36 DEBUG    Checking column names
2021-08-26 19:36:36 DEBUG    Index name 'name'
2021-08-26 19:36:36 DEBUG    Column name 'y'
2021-08-26 19:36:36 INFO     Checking data format
2021-08-26 19:36:36 INFO     Column 'y'
2021-08-26 19:36:36 INFO     count    300.000000
2021-08-26 19:36:36 INFO     mean       2.985426
2021-08-26 19:36:36 INFO     std        2.313562
2021-08-26 19:36:36 INFO     min       -1.679489
2021-08-26 19:36:36 INFO     50%        3.965726
2021-08-26 19:36:36 INFO     max        6.399967
2021-08-26 19:36:36 INFO     ---
2021-08-26 19:36:36 INFO     Preparing input data
2021-08-26 19:36:36 INFO     Final dataframe has 300 lines and 3 columns
2021-08-26 19:36:36 INFO     Searching for missing values
2021-08-26 19:36:36 INFO     No missing values found
2021-08-26 19:36:36 INFO     Writing autoclass.db2 file
2021-08-26 19:36:36 INFO     If any, missing values will be encoded as '?'
2021-08-26 19:36:36 DEBUG    Writing autoclass.tsv file [for later use]
2021-08-26 19:36:36 INFO     Writing .hd2 file
2021-08-26 19:36:36 INFO     Writing .model file
2021-08-26 19:36:36 INFO     Writing .s-params file
2021-08-26 19:36:36 INFO     Writing .r-params file
2021-08-26 19:36:36 ERROR    AutoClass C executable not found in path!
2021-08-26 19:36:36 INFO     Writing run file
2021-08-26 19:36:36 ERROR    AutoClass C executable not found in path!

[pierrepo]

Hi @PeterPirog
autoclass looks indeed properly working on your computer.
Did you update the $PATH variable accordingly?
In the documentation, it's

export PATH=$PATH:$(pwd)/autoclass-c

with $(pwd)/autoclass-c corresponding to the directory in which autoclass is installed.