Error importing images from wordpress media gallery in the latest version free

Hello, thanks for your help, first of all I do not speak English, so I must use an automatic translator, it is likely to make some mistakes, I appreciate your understanding.

My problem is the following, after updating to version 1.12.7, two days ago, it happens that when importing images from the media gallery of word press the system remains frozen, I can select several images, but when importing them appears The message “Please, wait until images will be imported”, normally this took a few seconds, depending on the amount of images I wanted to upload, but last night I tried to do it several times and only uploads the first one.

I tried to do it by uploading a single image and the same thing happens, it freezes, but, nevertheless, it manages to upload it, I must interrupt the load to review the gallery and be able to visualize that it actually imported that single image.

I appreciate if you can tell me if it is a known problem that I can solve in some way.

Thank you,

Francisco Jorquera