*DEVEL* Sometimes uploading new tft does not work

[cablesandcoffee]

Describe the bug I've had some issues several times where the upload of new tft does not start. Solved by restarting the panel and trying again.

Panel logs:

09:27:55	ERROR	(77345785) UpdateManager: Have still not received a new Nextion update event while waiting for 20s. Will wait another 20s.
09:27:35 	ERROR 	(77325785) UpdateManager: Have still not received a new Nextion update event while waiting for 20s. Will wait another 20s.
09:27:15 	ERROR 	(77305785) UpdateManager: Have still not received a new Nextion update event while waiting for 20s. Will wait another 20s.
09:26:55 	INFO 	(77285775) UpdateManager: HTTP Client status: 200, remote file size: 12328112
09:26:55 	INFO 	(77285745) Nextion: Will try to init Nextion update process. New TFT file size: 12328112
09:26:55 	WARNING 	(77285645) Nextion: Unknown event data from Nextion: SPM
09:26:50 	INFO 	(77280395) UpdateManager: Will start updating GUI. Remote file size: 12328112 bytes