Web page not fully loading; "Overflowed largest free heap block: 64 bytes"

[Ramias1]

Tried to view the webpage for my device (installed back in October) and see this:

11:46:29 [E] [json:050] Could not allocate memory for JSON document! Overflowed largest free heap block: 64 bytes 11:46:29 [E] [json:050] Could not allocate memory for JSON document! Overflowed largest free heap block: 64 bytes 11:46:29 [E] [json:050] Could not allocate memory for JSON document! Overflowed largest free heap block: 64 bytes 11:46:29 [E] [json:050] Could not allocate memory for JSON document! Overflowed largest free heap block: 64 bytes

Only a few lines of the webpage GUI load, with no values. I manage this in Home Assistant. Ideas? I have to get up on a ladder to unplug it.

[Ramias1]

Adding: Home Assistant shows this:

Firmware: 2023.10.6 (Nov 10 2023, 00:23:25)
Hardware: 2.5

How do I update the firmware OTA?