What's "Error: null" for Android device console log?

Today I have been seeing the output log from Android device:

E/Corona  (18993): ERROR: null

E/Corona  (18993): ERROR: null

(1) I didn’t see this error before (I built Android version with Corona 2188 today, the last one was Corona 2170).

(2) I don’t know the step to make this error printed out. It just prints once a while.

What is this error?

Should I be paying attention to anything for this error?

Are you doing any network requests using POST on Android 4.3 or any HTTPS requests?

Yes, I do use a lot.

But it does not happen for every request.

It just happens once in a while. I am not sure what triggers it and what goes wrong (from user perspective, I didn’t see anything wrong when the error prints)

It’s a know issue on Android 4.3 with network POST. It is very sensitive and will sometimes drop network requests. You should have a retry implemented. Search the forums for it. It was discussed more than once.

If you see it every time when making a https request then it’s a certificate authorisation issue. Android has less root certificate authorities listed than say windows or iOS. You need an intermediate certificate installed on the server.

(1) It does not happen every time I make http requests

(2) My http requests pull data from various sources (servers)… so when you say “certificate installed on the server”, what server are you referring to?

(3) I didn’t see this error until today. Maybe I didn’t pay a lot of attention, but this is the first time I am aware of this error (but if it happened before, I should have noticed it earlier) and I have been using http requests for this app for about 6 months.

Please read carefully.

There is an issue with POST requests sometimes droping on Android 4.3. (depends on the quality of network connection)

Another common issue that gives this kind of error or ERROR -1 is when you are doing HTTP S   requests and android does not recognise the server certificate as trusted.

Are you doing any network requests using POST on Android 4.3 or any HTTPS requests?

Yes, I do use a lot.

But it does not happen for every request.

It just happens once in a while. I am not sure what triggers it and what goes wrong (from user perspective, I didn’t see anything wrong when the error prints)

It’s a know issue on Android 4.3 with network POST. It is very sensitive and will sometimes drop network requests. You should have a retry implemented. Search the forums for it. It was discussed more than once.

If you see it every time when making a https request then it’s a certificate authorisation issue. Android has less root certificate authorities listed than say windows or iOS. You need an intermediate certificate installed on the server.

(1) It does not happen every time I make http requests

(2) My http requests pull data from various sources (servers)… so when you say “certificate installed on the server”, what server are you referring to?

(3) I didn’t see this error until today. Maybe I didn’t pay a lot of attention, but this is the first time I am aware of this error (but if it happened before, I should have noticed it earlier) and I have been using http requests for this app for about 6 months.

Please read carefully.

There is an issue with POST requests sometimes droping on Android 4.3. (depends on the quality of network connection)

Another common issue that gives this kind of error or ERROR -1 is when you are doing HTTP S   requests and android does not recognise the server certificate as trusted.