TYPO3 Core

I can't reproduce this error. I tested your code example in TYPO3 7.6 and the current TYPO3 master and it worked just fine.
Can you maybe give us more information about your system?

As we got no feedback and couldn't reproduce this error I am closing this ticket.

@claus
I have a model, which respect database-normalisation and allow frontendediting.
My construction is not the best way of coding. But I need whitespace to get a little rest of structure in the code.
I value your recommendation to avoid the whitespaces as a ironic joke to the hacking-style.

@ Mona

I got the error with TPO3 7.6 - XAMPP 7.05 - activated xdebug. I closed that development.
It seems to be a parsing-problem.
I got the error although with TYPO 8.7.1 - XAMPP 7.05 - activated xdebug.

I tried it on TYPO3 8.7.1

                                        <f:alias map="{ editSpeechDummy:'',
                                                        editSpeechForm: {   markerSignStyle:        '',
                                                                            iconPath:               '',
                                                                            signFields:             settings.controller.action.parent.speech.parts.all,
                                                                            menuAction:             settings.controller.menu.action.update,
                                                                            menuDataType:           settings.controller.menu.dataType.speech,
                                                                            menuDataReaction:       settings.controller.menu.dataReaction.speech,
                                                                            menuModel:              settings.controller.menu.model.speech,
                                                                            menuParent:             settings.controller.menu.parent.cartoon,
                                                                            sizeClass:              'small',
                                                                            speechFields:           speechFields,
                                                                            parent:                 cartoon
                                                                        }
                                                    }" 
                                        >
                                            <f:alias map="{ editSpeechDummySecond: '',
                                                            editSpeechRid: { ridSpeech:              ridSpeech,
                                                                             ridSpeechMarkup:        ridSpeechMarkup,
                                                                             ridSpeechForm:          ridSpeechForm,
                                                                             ridSpeechTests:         ridSpeechTests,
                                                                             actionType:             settings.controller.action.type.update,
                                                                             actionParent:           settings.controller.action.parent.speech.name.cartoon,
                                                                             actionFields:           settings.controller.action.parent.speech.parts.speech,
                                                                             ridSpeechFieldText:     '{ridSpeech}-{speechFields.text}',
                                                                             ridSpeechFieldFormText: '{ridSpeechForm}-{speechFields.text}',
                                                                             ridSpeechFieldJsText:   ''
                                                                        }
                                                        }" 
                                            >

                                        <f:alias map="{ editSpeechDummy:'',
                                                        editSpeechForm: {   markerSignStyle:        '',
                                                                            iconPath:               '',
                                                                            signFields:             settings.controller.action.parent.speech.parts.all,
                                                                            menuAction:             settings.controller.menu.action.update,
                                                                            menuDataType:           settings.controller.menu.dataType.speech,
                                                                            menuDataReaction:       settings.controller.menu.dataReaction.speech,
                                                                            menuModel:              settings.controller.menu.model.speech,
                                                                            menuParent:             settings.controller.menu.parent.cartoon,
                                                                            sizeClass:              'small',
                                                                            speechFields:           speechFields,
                                                                            parent:                 cartoon
                                                                        },
                                                            editSpeechDummySecond: '',
                                                            editSpeechRid: { ridSpeech:              ridSpeech,
                                                                             ridSpeechMarkup:        ridSpeechMarkup,
                                                                             ridSpeechForm:          ridSpeechForm,
                                                                             ridSpeechTests:         ridSpeechTests,
                                                                             actionType:             settings.controller.action.type.update,
                                                                             actionParent:           settings.controller.action.parent.speech.name.cartoon,
                                                                             actionFields:           settings.controller.action.parent.speech.parts.speech,
                                                                             ridSpeechFieldText:     '{ridSpeech}-{speechFields.text}',
                                                                             ridSpeechFieldFormText: '{ridSpeechForm}-{speechFields.text}',
                                                                             ridSpeechFieldJsText:   ''
                                                                        }
                                                        }" 
                                            >

1238169398: Fluid parse error in template partial_Cartoon/CartoonRotation_a2afc4a349d7ae6d9e6d59f7b3d78d236e5688e8, line 295 at character 40. Error: Not all tags were closed! (error code 1238169398). Template source chunk: <f:alias map="{ editSpeechDummy:'', editSpeechForm: { markerSignStyle: '', iconPath: '', signFields: settings.controller.action.parent.speech.parts.all, menuAction: settings.controller.menu.action.update, menuDataType: settings.controller.menu.dataType.speech, menuDataReaction: settings.controller.menu.dataReaction.speech, menuModel: settings.controller.menu.model.speech, menuParent: settings.controller.menu.parent.cartoon, sizeClass: 'small', speechFields: speechFields, parent: cartoon }, editSpeechDummySecond: '', editSpeechRid: { ridSpeech: ridSpeech, ridSpeechMarkup: ridSpeechMarkup, ridSpeechForm: ridSpeechForm, ridSpeechTests: ridSpeechTests, actionType: settings.controller.action.type.update, actionParent: settings.controller.action.parent.speech.name.cartoon, actionFields: settings.controller.action.parent.speech.parts.speech, ridSpeechFieldText: '{ridSpeech}-{speechFields.text}', ridSpeechFieldFormText: '{ridSpeechForm}-{speechFields.text}', ridSpeechFieldJsText: '' } }" > <f:render partial="Speech/Speech" section="main" arguments="{ rid: ridSpeech, speech: speech, parent: cartoon, mediaIn: mediaIn, plugIn: plugIn, editSpeechForm: editSpeechForm, editSpeechRid: editSpeechRid }" /> <porth:burka status="admin_be"> <f:render partial="Forms/Speech/Cartoon/Delete" section="main" arguments="{ rid: ridSpeech, speech: speech, speechFields: speechFields, sizeClass: speechSizeClass, parent: cartoon, mediaIn: mediaIn, plugIn: plugIn }" /> </porth:burka> </f:alias> </f:alias> </f:alias> </f:for> <porth:burka status="admin_be"> <f:render partial="Forms/Speech/Cartoon/Create" section="main" arguments="{ rid: '{ridRotation}_speech-new', speech: speech, speechFields: speechFields, sizeClass: sizeClass, parent: cartoon, mediaIn: mediaIn, plugIn: plugIn }" /> </porth:burka> </div> <f:comment></f:comment> <f:comment></f:comment> <porth:burka status="admin_be"> <f:if condition="{cartoon.rotation}"> <f:then> <f:render partial="Menu/MarkerSign" section="main" arguments="{ rid: ridRotation, ridMarkup: ridRotationMarkup, ridForm: ridRotationForm, pairs: '{ridRotationFormRotation},{ridRotationRotation},{ridRotationJsRotation}', menuAction: menuAction, menuModel: menuModel, menuParent: menuParent, menuDataType: menuDataType, menuDataReaction: menuDataReaction, sizeClass: sizeClassDim, markerSignStyle: '', sign: '{menuModel}-{signFields}{f:if(condition:\'{actionParent}\',then:\'#{actionParent}\',else:\'\')}', iconPath: '' menuTitle: '{f:translate(key:\'LLL:EXT:positioner/Resources/Private/Language/locallang_editing.xlf:frontend.menu.title.button.info.{menuAction}\')}' }" /> <f:render partial="Forms/Rotation" section="main" arguments="{ ridForm: ridRotationForm, rotation: cartoon.rotation, rotationFields: rotationFields, actionType: actionType, actionParent: actionParent, actionFields: actionFields, menuDataReaction: menuDataReaction, mediaIn: mediaIn, plugIn: plugIn, loadtype: settings.frontendEditing.ajaxLoadType, infoText: { error: '{menuModel}-{rotationFields.rotation}', success: '{menuModel}-{rotationFields.rotation}' }, parent: parent }" /> </f:then> </f:if> </porth:burka> </f:alias> </f:alias> </f:alias> </f:section> </body> </html> (More information)

TYPO3Fluid\Fluid\Core\Parser\Exception thrown in file
C:\xampp\htdocs\buergerstimmen\Source\vendor\typo3fluid\fluid\src\Core\Parser\TemplateParser.php in line 156.

@