Why are you using nfs/smb path for temporary files?
I am also missing the 1st part of the log where kodi boots... there is useful info there....
i.e.
2019-02-25 18:39:38.134 T:236 DEBUG: CLEANSUBS >> STARTED VERSION 6.4
2019-02-25 18:39:38.384 T:236 DEBUG: CLEANSUBS >> DEFINITIONS >> NO NEW DEFINITIONS (L:28100 == R:28100)
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING ON >> True
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING INFO >> True
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING LOGO >> True
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING FOLDER >>
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING CUSTOM DEF >> True
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING REMOVE CC >> False
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING REMOVE TAGS >> False
2019-02-25 18:39:38.460 T:236 DEBUG: CLEANSUBS >> SETTING SUBS BACKGROUND >> False
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING SUBS BACKGROUND TXT COLOR >> 00FFFF
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING METHOD >> 0
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING HEURISTICS LINES NR >> 2
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING DELETE ORIGINAL SUBS >> True
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING SUBFIRST >> False
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING CHARSET >> DEFAULT
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING SUB LANGUAGES: >>CZECH<<
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING SUB LANGUAGES: >>ENGLISH<<
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING SUB LANGUAGES: >>SERBO-CROATIAN<<
2019-02-25 18:39:38.462 T:236 DEBUG: CLEANSUBS >> SETTING SUB LANGUAGES: >>GENERIC<<
2019-02-25 18:39:38.531 T:236 DEBUG: CLEANSUBS >> USING TOTAL DEFINITIONS: 669 elements
2019-02-25 18:39:38.875 T:236 DEBUG: CLEANSUBS >> UUID is 52
2019-02-25 18:39:38.889 T:236 DEBUG: CLEANSUBS >> SQLITE ERROR IN MAIN
2019-02-25 18:39:38.889 T:236 DEBUG: CLEANSUBS >> NO RECORDS IN LOCAL DB
2019-02-25 18:39:38.889 T:236 DEBUG: CLEANSUBS >> REMOVED PYO
Anyways, the bottom line is that the subs file doesn't exist
Or it can't open it for some reason:
2019-02-25 20:00:51.201 T:22037 DEBUG: CLEANSUBS >> SUBS ADDED >>xxxx (2018).en.srt
2019-02-25 20:00:51.201 T:22037 DEBUG: CLEANSUBS >> FILE DOESNT EXIST: xxx://xxxx/xxx/xxx/xxx/xxx/xxx (2018)/xxxx (2018
2019-02-25 20:00:51.204 T:22037 DEBUG: CLEANSUBS >> SQL ERROR IN CheckDatabase
2019-02-25 20:00:51.205 T:22037 DEBUG: CLEANSUBS >> SUB STATS WILL BE ADDED TO LOCAL DATABASE
2019-02-25 20:00:51.205 T:22037 DEBUG: CLEANSUBS >> PRE ENC >> CAN NOT OPEN SUBS!!!
2019-02-25 20:00:51.205 T:22037 DEBUG: CLEANSUBS >> ENC >> ERROR
2019-02-25 20:00:51.206 T:22037 DEBUG: Previous line repeats 9 times.
2019-02-25 20:00:51.206 T:22037 DEBUG: CLEANSUBS >> ENC >> OPENED WITH KODI ENCODING: DEFAULT
The file should be downloaded to local folder.