Opening a one time view page give a notice: A session had already been started....

[byeight]

Steps to reproduce

1. Select the "One time view link" and copy the link
2. Open the link on another pc
3. The One time view link page opens with the notice

Expected behaviour

To see only the one time view page, without notice.

Actual behaviour

It displays the requested page and an extra message:
Notice: A session had already been started - ignoring session_start() in C:\wamp64\www\teampass\otv.php on line 16

1 | 0.0022 | 527456 | {main}( ) | ...\index.php:0
2 | 0.0738 | 3376584 | include( 'C:\wamp64\www\teampass\otv.php' ) | ...\index.php:451
3 | 0.0739 | 3376584 | session_start ( ) | ...\otv.php:16

Server configuration

Operating system: Windows server 2012 R2

Web server: Apache 2.4.23

Database: MySQL 5.7.14

PHP version: 7.0.10

Teampass version: Latest, 2.1.27.7

Updated from an older Teampass or fresh install: Fresh install

Client configuration

Browser:: Firefox 54.0.1 and Edge

Operating system: Windows 10

Logs

Web server error log

Insert your webserver log here

Firebug log (How to?)

Insert the Firebug log here

[nilsteampassnet]

A fix was committed recently for this in 'development' branch.

Thanks for reporting