Attempt to modify property "data" on null

407: /www/hosting/imost.cz/invport/library/tracy/tracy/src/Tracy/Debugger/Debugger.php

#0 /www/hosting/imost.cz/invport/library/tracy/tracy/src/Tracy/Debugger/Debugger.php(463): Tracy\Debugger::errorHandler()
#1 /www/hosting/imost.cz/invport/library/tracy/tracy/src/Tracy/Debugger/Debugger.php(230): Tracy\Debugger::getBar()
#2 /www/hosting/imost.cz/invport/library/tracy/tracy/src/Tracy/Debugger/Debugger.php(205): Tracy\Debugger::dispatch()
#3 /www/hosting/imost.cz/invport/app/bootstrap.php(23): Tracy\Debugger::enable()
#4 /www/hosting/imost.cz/invport/index.php(10): require('...')
#5 {main}