Lightroom 5.7 jammed

[#1]

I have been using 5.7 since 2014, no problems. Suddenly the program is "jammed" by some wrong file and nothing I do has fixed the problem.

[#2]

Please include the following for some clarity:
Operating system and Version number
The full text of any Error Message(s)
What you were doing when the problem occurred
Screenshots of the problem
And by "jammed" you mean...?

[#3]

Please explain me in details

[#4]

Best of luck to you. I have never heard of a computer program being JAMMED. Whatever tha really means. If u would like some help to fix the problem you'll need to state what error message you got.

[#5]

Lock file perhaps?

see: https://helpx.adobe.com/lightroom-classic/kb/lightroom-error-catalog-cannot-be-opened-lrcat-lock.htm...

be very very careful