[djhifi]

OK, so removing the folder+file from the addon_data and re-downloading via the addon throws this into the log:

21:02:54.700 T:140562765678336 DEBUG: [Light IMDb Ratings Update] - PHP installation completed
21:02:54.700 T:140562765678336 INFO: CPythonInvoker(24, special://home/addons/script.light.imdb.ratings.update/resources/support/autoconf.py): script successfully run
21:02:54.811 T:140562765678336 INFO: Python script stopped

EDIT 1:

Running the manual update of ratings after the previous debug log throws this:

21:06:02.325 T:140560078124800 INFO: initializing python engine.
21:06:02.325 T:140560078124800 DEBUG: CPythonInvoker(27, special://home/addons/script.light.imdb.ratings.update/resources/library/update.py): start processing
21:06:02.352 T:140560078124800 DEBUG: -->Python Interpreter Initialized<--
21:06:02.353 T:140560078124800 DEBUG: CPythonInvoker(27, special://home/addons/script.light.imdb.ratings.update/resources/library/update.py): the source file to load is "special://home/addons/script.light.imdb.ratings.update/resources/library/update.py" ("/storage/.kodi/addons/script.light.imdb.ratings.update/resources/library/update.py")
21:06:02.353 T:140560078124800 WARNING: CPythonInvoker(27): Script invoked without an addon. Adding all addon modules installed to python path as fallback. This behaviour will be removed in future version.
21:06:02.359 T:140560078124800 DEBUG: CPythonInvoker(27, special://home/addons/script.light.imdb.ratings.update/resources/library/update.py): setting the Python path to /storage/.kodi/addons/script.light.imdb.ratings.update/resources/library:/usr/share/kodi/addons/script.module.pil/lib:/storage/.kodi/addons/script.module.requests/lib:/storage/.kodi/addons/script.module.simplejson/lib:/storage/.kodi/addons/script.common.plugin.cache/lib:/storage/.kodi/addons/script.module.beautifulsoup4/lib:/storage/.kodi/addons/script.module.chardet/
lib:/storage/.kodi/addons/script.module.autocompletion/lib:/storage/.kodi/addons/script.module.addon.signals/lib:/storage/.kodi/addons/script.module.youtube.dl/lib:/storage/.kodi/addons/script.module.kodi65/lib:/storage/.kodi/addons/script.module.routing/lib:/storage/.kodi/addons/script.module.six/lib:/storage/.kodi/addons/script.module.dateutil/
lib:/storage/.kodi/addons/script.module.arrow/lib:/storage/.kodi/addons/script.module.beautifulsoup/lib:/storage/.kodi/addons/script.module.musicbrainz/lib:/storage/.kodi/addons/script.module.simplecache/lib:/storage/.kodi/addons/script.module.thetvdb/lib:/storage/.kodi/addons/script.module.metadatautils/lib:/
storage/.kodi/addons/script.module.myconnpy/lib:/usr/lib/python27.zip:/usr/lib/python2.7:/
usr/lib/python2.7/plat-linux2:/usr/lib/python2.7/lib-tk:/usr/lib/python2.7/lib-old:/usr/lib/python2.7/
lib-dynload:/usr/lib/python2.7/site-packages:/usr/lib/python2.7/site-packages/gtk-2.0
21:06:02.359 T:140560078124800 DEBUG: CPythonInvoker(27, special://home/addons/script.light.imdb.ratings.update/resources/library/update.py): entering source directory /storage/.kodi/addons/script.light.imdb.ratings.update/resources/library
21:06:02.460 T:140560078124800 DEBUG: [Light IMDb Ratings Update] - Ratings update for Movies started

EDIT2:

OK, here is the report from md5sum. A) is the file currently installed on libreelec (after removing manually and downloading via addon again), B) is the file directly downloaded from the link you gave me, to my windows machine.

A)

[\\192.168.1.98\Userdata\addon_data\script.light.imdb.ratings.update\php-binary\]
php-cgi 68049abc60409d6a71afdef9d6330a8e


B)

[C:\Users\manue\Desktop\]
php-cgi_5.6_x86_64 68049abc60409d6a71afdef9d6330a8e


The same hash ....


PS: SSH into the machine for privileges on the binary (the binary is the one downloaded AFTER deleting the one you recommended):

https://imgur.com/EU21VBf