I have the same problem as described below.
I am seeing this in a RUT240 and RUT956 using the latest firmware as of today.
I have tried all the recommendation in the last two posts and nothing seems to get it back.
seems to be related to this error. resetting service doesnt seem to help.
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: bad argument #1 to ‘ipairs’ (table expected, got string)
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: stack traceback:
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: ?: in function <?:76>
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: (tail call): ?
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: ?: in function ‘execute_request’
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: ?: in function ‘handle_request’
Thu Mar 14 07:18:55 2024 daemon.err uhttpd[5904]: ?: in function <?:30>