Without a log or any other relevant information, it is quite difficult to answer this question.
There were changes during the last months that affected the system itself and TvHeadend v4.3 was also updated.
Please check if these are among the add-ons waiting to be updated. Due to a fairly significant update of the glibc package, the entire LE binary repository has been recompiled starting from version 9.2.8.17. So if your current add-ons start with version v9.2.0.*, they need to be updated, but if they start with v9.2.1.*, you are using the current version.
The problem resolved itself, may, it update auto