Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
We have a user using our exchange client app (for macOS) and is experiencing sync issues. Upon investigation it seems the server is constantly sending back errors for even simple GetItem requests:
```
POST https://hostname/ews/Exchange.asmx
User-Agent: BusyCal-3.11.1 CFNetwork/1327.0.4 Darwin/21.2.0 CalendarAgent/961.4.2
Content-Type: text/xml; charset=UTF-8
SOAPAction: http://schemas.microsoft.com/exchange/s ... es/GetItem
Cache-Control: no-cache
2022-10-05 10:42:19 -2- received response =>
HTTP 200
URL: https://hostname/ews/Exchange.asmx
Strict-Transport-Security: max-age=31536000
Content-Encoding: gzip
Content-Type: text/xml;charset=utf-8
Vary: Accept-Encoding, User-Agent
Server: nginx
```
This returns:
```
<?xml version='1.0' encoding='UTF-8'?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelop ... ersionInfo xmlns:ns2="http://schemas.microsoft.com/exchange/s ... 2006/types" xmlns="http://schemas.microsoft.com/exchange/s ... 6/messages" MajorVersion="14" MinorVersion="3" MajorBuildNumber="158" MinorBuildNumber="11" Version="Exchange2010_SP2"/></soap:Header><soap:Body><GetItemResponse xmlns:ns2="http://schemas.microsoft.com/exchange/s ... 2006/types" xmlns="http://schemas.microsoft.com/exchange/s ... nseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></MessageText></GetItemResponseMessage></ResponseMessages></GetItemResponse></soap:Body></soap:Envelope>
```
It is throwing similar errors for other requests too - what do we do? Or what can we advise the user to do?
```
POST https://hostname/ews/Exchange.asmx
User-Agent: BusyCal-3.11.1 CFNetwork/1327.0.4 Darwin/21.2.0 CalendarAgent/961.4.2
Content-Type: text/xml; charset=UTF-8
SOAPAction: http://schemas.microsoft.com/exchange/s ... es/GetItem
Cache-Control: no-cache
2022-10-05 10:42:19 -2- received response =>
HTTP 200
URL: https://hostname/ews/Exchange.asmx
Strict-Transport-Security: max-age=31536000
Content-Encoding: gzip
Content-Type: text/xml;charset=utf-8
Vary: Accept-Encoding, User-Agent
Server: nginx
```
This returns:
```
<?xml version='1.0' encoding='UTF-8'?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelop ... ersionInfo xmlns:ns2="http://schemas.microsoft.com/exchange/s ... 2006/types" xmlns="http://schemas.microsoft.com/exchange/s ... 6/messages" MajorVersion="14" MinorVersion="3" MajorBuildNumber="158" MinorBuildNumber="11" Version="Exchange2010_SP2"/></soap:Header><soap:Body><GetItemResponse xmlns:ns2="http://schemas.microsoft.com/exchange/s ... 2006/types" xmlns="http://schemas.microsoft.com/exchange/s ... nseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></GetItemResponseMessage><GetItemResponseMessage ResponseClass="Error"><MessageText>ErrorGetItem: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null</MessageText></MessageText></GetItemResponseMessage></ResponseMessages></GetItemResponse></soap:Body></soap:Envelope>
```
It is throwing similar errors for other requests too - what do we do? Or what can we advise the user to do?
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
Have you found a solution to this?
We recently bought a EWS license so that our MacOS users could use Zimbra with Outlook or the native Calendar client but were are seeing loads of exactly those errors and everybody who tried EWS is missing about half of their calendar entries.
We recently bought a EWS license so that our MacOS users could use Zimbra with Outlook or the native Calendar client but were are seeing loads of exactly those errors and everybody who tried EWS is missing about half of their calendar entries.
- L. Mark Stone
- Ambassador
- Posts: 2802
- Joined: Wed Oct 09, 2013 11:35 am
- Location: Portland, Maine, US
- ZCS/ZD Version: 10.0.7 Network Edition
- Contact:
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
The "new" Outlook for Mac has become essentially a Microsoft-only email client unfortunately. If the interface allows you to switch to the "old" Outlook you should be OK.melbel wrote:Have you found a solution to this?
We recently bought a EWS license so that our MacOS users could use Zimbra with Outlook or the native Calendar client but were are seeing loads of exactly those errors and everybody who tried EWS is missing about half of their calendar entries.
___________________________________
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
No we did not find a solution. This has nothing to do with new / old Outlook; the errors are coming from server-side Java and are implementation bugs / programmer errors. The error suggests they've got nullability checks failing internally and need to be patched within Zimbra.
It's not just Outlook failing - every other Calendar app we've tried to use on the mac is failing with dozens of events missing because of these errors.
It's not just Outlook failing - every other Calendar app we've tried to use on the mac is failing with dozens of events missing because of these errors.
- L. Mark Stone
- Ambassador
- Posts: 2802
- Joined: Wed Oct 09, 2013 11:35 am
- Location: Portland, Maine, US
- ZCS/ZD Version: 10.0.7 Network Edition
- Contact:
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
Understood. Presumably you've already opened a Support Case?busymac wrote:No we did not find a solution. This has nothing to do with new / old Outlook; the errors are coming from server-side Java and are implementation bugs / programmer errors. The error suggests they've got nullability checks failing internally and need to be patched within Zimbra.
It's not just Outlook failing - every other Calendar app we've tried to use on the mac is failing with dozens of events missing because of these errors.
If you post the Case# here, when others experience the same problem, they can reference your Case# and this forum thread in their own Support Case, which will help.
___________________________________
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
I tried using the contact us link and the page failed with a 5XX error of some sort. I've been unable to open a case and assumed this is perhaps the only way to get through
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
We are not Zimbra clients and so cannot seem to open a support ticket here: https://support.zimbra.com/s/login/?ec= ... management
Can someone help? Our customs are (we're developers of a calendaring client on macOS) however one of our customers reported back recently and said Zimbra Support is saying "This must be a client side bug, please use Apple Calendar instead"
Shocking.
Can someone help? Our customs are (we're developers of a calendaring client on macOS) however one of our customers reported back recently and said Zimbra Support is saying "This must be a client side bug, please use Apple Calendar instead"
Shocking.
- L. Mark Stone
- Ambassador
- Posts: 2802
- Joined: Wed Oct 09, 2013 11:35 am
- Location: Portland, Maine, US
- ZCS/ZD Version: 10.0.7 Network Edition
- Contact:
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
Not sure I've got this right...busymac wrote:We are not Zimbra clients and so cannot seem to open a support ticket here: https://support.zimbra.com/s/login/?ec= ... management
Can someone help? Our customs are (we're developers of a calendaring client on macOS) however one of our customers reported back recently and said Zimbra Support is saying "This must be a client side bug, please use Apple Calendar instead"
Shocking.
You develop an Exchange Calendaring application that in Zimbra, relies on Exchange Web Services. Zimbra's EWS service is Network Edition only, so not available in the Open Source product. You don't have a Network Edition license.
How then do you test your application with Zimbra's EWS if you don't have a Zimbra server internally that actually does EWS? Do you at least have an account with a Zimbra Hosting Provider so you have access to an EWS-enabled mailbox?
Maybe I'm misunderstanding something.
___________________________________
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
Not quite - we're developers of BusyCal https://busymac.com/busycal/index.html. This is a "Calendar" app for macOS and supports EWS, CalDAV, WebDAV and so on. Users using our app can add an existing EWS account to manage their calendars.
Existing clients that have a valid Zimbra license use our app to manage their calendars, except they're unable to sync correctly. After inspecting their client side logs, we discovered their Zimbra installation is throwing these server side errors.
We then asked them to test their account on other popular 3rd party calendaring apps on the mac (including Outlook) and it turns out every single app fails with similar errors, so it's not just us.
As a developer I understand the errors coming from Zimbra are server side errors - possibly bugs in Zimbra or a configuration issue of some sort that the client is unaware of.
Existing clients that have a valid Zimbra license use our app to manage their calendars, except they're unable to sync correctly. After inspecting their client side logs, we discovered their Zimbra installation is throwing these server side errors.
We then asked them to test their account on other popular 3rd party calendaring apps on the mac (including Outlook) and it turns out every single app fails with similar errors, so it's not just us.
As a developer I understand the errors coming from Zimbra are server side errors - possibly bugs in Zimbra or a configuration issue of some sort that the client is unaware of.
Re: Cannot invoke "java.lang.CharSequence.length()" because "this.text" is null
Yes, we have a support case: 01417225-EWS , so maybe others can chip in, since for us it's been sitting at "We have forwarded all the logs you shared with us to development team." for quite some while now. So maybe others can reference that and push the priority up a bit this way.L. Mark Stone wrote:Understood. Presumably you've already opened a Support Case?busymac wrote:No we did not find a solution. This has nothing to do with new / old Outlook; the errors are coming from server-side Java and are implementation bugs / programmer errors. The error suggests they've got nullability checks failing internally and need to be patched within Zimbra.
It's not just Outlook failing - every other Calendar app we've tried to use on the mac is failing with dozens of events missing because of these errors.
If you post the Case# here, when others experience the same problem, they can reference your Case# and this forum thread in their own Support Case, which will help.
Turning EWS debugging on gives a complete stack trace in addition to the original error so IMO it should be quite easy for someone with access to the source to exactly see what's going wrong where.
Cheers
Michael