Fix Wordpress error

I am looking for a skilled WordPress developer to fix a plugin conflict error on my website. Specific Error: - The website is experiencing a plugin conflict. Specific Plugin: - The conflict is caused by the Image Slider plugin. Error Details ============= An error of type E_ERROR was caused in line 387 of the file /customers/8/9/a/[login to view URL] Error message: Uncaught ValueError: strrpos(): Argument #3 ($offset) must be contained in argument #1 ($haystack) in /customers/8/9/a/[login to view URL]:387 Stack trace: #0 /customers/8/9/a/[login to view URL](387): strrpos('', '.', -1) #1 /customers/8/9/a/[login to view URL](2344): RevSliderFunctions->check_valid_image(false) #2 /customers/8/9/a/[login to view URL](2278): RevSliderSlide->get_overview_image_attributes('gallery') #3 /customers/8/9/a/[login to view URL](209): RevSliderSlider->get_overview_data(Object(RevSliderSlider), Array) #4 /customers/8/9/a/[login to view URL](126): RevSliderFunctionsAdmin->get_slider_overview() #5 /customers/8/9/a/[login to view URL](216): RevSliderFunctionsAdmin->get_short_library() #6 /customers/8/9/a/[login to view URL](22): RevSliderShortcodeWizard::add_scripts() #7 /customers/8/9/a/[login to view URL](292): RevSliderShortcodeWizard::enqueue_scripts('[login to view URL]') #8 /customers/8/9/a/[login to view URL](316): WP_Hook->apply_filters(NULL, Array) #9 /customers/8/9/a/[login to view URL](484): WP_Hook->do_action(Array) #10 /customers/8/9/a/[login to view URL](102): do_action('admin_enqueue_s...', '[login to view URL]') #11 /customers/8/9/a/[login to view URL](450): require_once('/customers/8/9/...') #12 /customers/8/9/a/[login to view URL](187): require('/customers/8/9/...') #13 {main} thrown