I use bootstrap-datetimepicker.js
Copyright 2012 by Stefan Petre
http://www.malot.fr/bootstrap-datetimepicker/index.php
I import the js and anot
For those who like me could not solve this problem with the solutions above, I sugest verifying if you initialize the $(element).datetimepicker(...) in different locations at the same time.
In my case, after a long time, I found a global.js interfering with another datetimepicker initialization.
If you need for some reason maintain work with different initializations, in different files, remember to remove the datetimepicker before each one with:
$(element).datetimepicker('remove')
Reference: https://www.malot.fr/bootstrap-datetimepicker/index.php#methods
Edit: This solution still needs to import the language files correctly, right after the bootstrap-datetimepicker.js
.
I hope this helps!