Error after activationg PHP-FPM

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Hello,

my hoster has a new feature called PHP-FPM. After activating my site is broken with following error:
An unexpected error occurred.
is_dir(): open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/home/.sites/29/site1794/web:/home/.sites/29/site1794/tmp:/usr/share/pear:/usr/bin/php_safemode)


Environmental Information
# concrete5 Version
Core Version - 8.3.2
Version Installed - 8.3.2
Database Version - 20180122213656
# concrete5 Packages
Event Calendar PRO (2.3.17), Fundamental (4.0.4), Magic Tabs (7.1.2), Pagelist Gallery (1.1.5), Safe HTML (7.0), Stack Popover (1.2.7), toesslab - Week Calendar (1.1.2), Touch Gallery (2.3.2)
# concrete5 Overrides
blocks/page_list/templates/masonry/view.php, blocks/page_list/templates/masonry/view.js, blocks/page_list/templates/masonry/view.css, blocks/page_list/templates/masonry, blocks/page_list/templates/simple_thumbnail_list/view.php, blocks/page_list/templates/simple_thumbnail_list/view.css, blocks/page_list/templates/simple_thumbnail_list, blocks/page_list/templates, blocks/page_list, blocks/touch_gallery/view.php, blocks/touch_gallery/templates/polaroid/view.php, blocks/touch_gallery/templates/polaroid/css/polaroid-styles.css, blocks/touch_gallery/templates/polaroid/css, blocks/touch_gallery/templates/polaroid, blocks/touch_gallery/templates/tight_grid/view.php, blocks/touch_gallery/templates/tight_grid/css/tight-grid-styles.css, blocks/touch_gallery/templates/tight_grid/css, blocks/touch_gallery/templates/tight_grid, blocks/touch_gallery/templates/corner_shadow/view.php, blocks/touch_gallery/templates/corner_shadow/css/corner-shadow-styles.css, blocks/touch_gallery/templates/corner_shadow/css, blocks/touch_gallery/templates/corner_shadow, blocks/touch_gallery/templates/sleek/view.php, blocks/touch_gallery/templates/sleek/css/sleek-styles.css, blocks/touch_gallery/templates/sleek/css/images/magnifier.png, blocks/touch_gallery/templates/sleek/css/images, blocks/touch_gallery/templates/sleek/css, blocks/touch_gallery/templates/sleek, blocks/touch_gallery/templates/focus/view.php, blocks/touch_gallery/templates/focus/css/focus-styles.css, blocks/touch_gallery/templates/focus/css, blocks/touch_gallery/templates/focus, blocks/touch_gallery/templates/circled_tech/view.php, blocks/touch_gallery/templates/circled_tech/css/circled-tech-styles.css, blocks/touch_gallery/templates/circled_tech/css, blocks/touch_gallery/templates/circled_tech, blocks/touch_gallery/templates/morph/view.php, blocks/touch_gallery/templates/morph/css/morph-styles.css, blocks/touch_gallery/templates/morph/css, blocks/touch_gallery/templates/morph, blocks/touch_gallery/templates/random_tilt/view.php, blocks/touch_gallery/templates/random_tilt/css/random-tilt-styles.css, blocks/touch_gallery/templates/random_tilt/css, blocks/touch_gallery/templates/random_tilt, blocks/touch_gallery/templates/tilt/view.php, blocks/touch_gallery/templates/tilt/css/tilt-styles.css, blocks/touch_gallery/templates/tilt/css, blocks/touch_gallery/templates/tilt, blocks/touch_gallery/templates/artist_grid/js/gridify.min.js, blocks/touch_gallery/templates/artist_grid/js, blocks/touch_gallery/templates/artist_grid/view.php, blocks/touch_gallery/templates/artist_grid/css/artist-grid-styles.css, blocks/touch_gallery/templates/artist_grid/css, blocks/touch_gallery/templates/artist_grid, blocks/touch_gallery/templates/circled/view.php, blocks/touch_gallery/templates/circled/css/circled-styles.css, blocks/touch_gallery/templates/circled/css, blocks/touch_gallery/templates/circled, blocks/touch_gallery/templates/simple_shadow/view.php, blocks/touch_gallery/templates/simple_shadow/css/simple-shadow-styles.css, blocks/touch_gallery/templates/simple_shadow/css, blocks/touch_gallery/templates/simple_shadow, blocks/touch_gallery/templates, blocks/touch_gallery, blocks/core_stack_display/templates/toesslab_accordion.php, blocks/core_stack_display/templates, blocks/core_stack_display, blocks/feature/view.php, blocks/feature/templates/hover_description/view.php, blocks/feature/templates/hover_description/view.js, blocks/feature/templates/hover_description/view.css, blocks/feature/templates/hover_description, blocks/feature/templates, blocks/feature/view.css, blocks/feature, blocks/testimonial/view.css, blocks/testimonial, blocks/jl_magic_tabs/templates/self_contained_starter/view.php, blocks/jl_magic_tabs/templates/self_contained_starter/view.css, blocks/jl_magic_tabs/templates/self_contained_starter, blocks/jl_magic_tabs/templates, blocks/jl_magic_tabs, blocks/image_slider/view.css, blocks/image_slider, blocks/fundamental_slick_slider/css/slick.css, blocks/fundamental_slick_slider/css, blocks/fundamental_slick_slider, blocks/next_previous/add.php, blocks/next_previous/db.xml, blocks/next_previous/view.php, blocks/next_previous/edit.php, blocks/next_previous/form_setup_html.php, blocks/next_previous/icon.png, blocks/next_previous/controller.php, blocks/next_previous, blocks/ds_pagelist_gallery/templates/no_buttons/js/jquery.spin.js, blocks/ds_pagelist_gallery/templates/no_buttons/js/blazy.min.js, blocks/ds_pagelist_gallery/templates/no_buttons/js/isotope.pkgd.min.js, blocks/ds_pagelist_gallery/templates/no_buttons/js/imagesloaded.pkgd.min.js, blocks/ds_pagelist_gallery/templates/no_buttons/js, blocks/ds_pagelist_gallery/templates/no_buttons/view.php, blocks/ds_pagelist_gallery/templates/no_buttons/view.css, blocks/ds_pagelist_gallery/templates/no_buttons, blocks/ds_pagelist_gallery/templates, blocks/ds_pagelist_gallery, elements/footer-custom.php, css/touch-gallery.css, css/images/sprites.png, css/images/194.png, css/images/preloader.gif, css/images/sprites.svg, css/images, css/foundation.custom.min.css, css/accordion.less, js/toesslab.js, page_templates/blog_entry.php, page_templates/blank.php, src/Helper/SmXmlToArray.php, src/Helper/OptionsGenerator.php, src/Helper/ThemeObject.php, src/Helper/MclInstaller.php, src/Helper/SupermintTheme.php, src/Helper/Upgrade.php, src/Helper/SmArrayToXml.php, src/Helper/BaseOptionsGenerator.php, src/Helper/ThemeFile.php, src/Helper
# concrete5 Cache Settings
Block Cache - On
Overrides Cache - On
Full Page Caching - On - If blocks on the particular page allow it.
Full Page Cache Lifetime - Every 6 hours (default setting).
# Server Software
Apache