new version of JATOS (3.7.2) doesn't transfer data
In the middle of February I've set up new JATOS server on a DigitalOcean droplet (8 GB Memory / 4 AMD vCPUs / 160 GB Disk / FRA1). I've followed the instructions from JatosDocumentation while setting up the server and everything seemed fine until I tried to test a few studies that I had imported.
The tasks are running fine until the end when the message "Transferring data, please wait a few moments" appears. The message stays there endlessly until I close the tab. When I check the results section I can see that a worker/participant had been counted but no data has been transferred, and the data size is 0b. The same thing happens when I close the task in the middle, the message "Aborting experiment, please wait a few moments" stays forever and no data has been saved after I close that tab.
This doesn't seem to be related to the memory size of the task, (as I was suspicious at the first hand) since it also happened with the small-sized OSWEB files which had a small number of variables. On the other hand, those tasks run pretty fine and the data is being saved if I import those studies on the other JATOS server, which is running on an older version (3.6.1).
So, I'm not sure should I edit some settings of my DigitalOcean docker, or JATOS itself in order to fix this issue with the data saving on the new server. I would appreciate any help, thank you very much in advance!