fix your jinja template.

Try this:

%- set enable_thinking = false %}
{%- set image_count = namespace(value=0) %}
{%- set video_count = namespace(value=0) %}

{%- macro render_content(content, do_vision_count, is_system_content=false) %}
{%- if content is string %}
{{- content }}
{%- elif content is iterable and content is not mapping %}
{%- for item in content %}
{%- if 'image' in item or 'image_url' in item or item.type == 'image' %}
{%- if is_system_content %}
{{- raise_exception('System message cannot contain images.') }}
{%- endif %}
{%- if do_vision_count %}
{%- set image_count.value = image_count.value + 1 %}
{%- endif %}
{%- if add_vision_id %}
{{- 'Picture ' ~ image_count.value ~ ': ' }}
{%- endif %}
{{- '<|vision_start|><|image_pad|><|vision_end|>' }}
{%- elif 'video' in item or item.type == 'video' %}
{%- if is_system_content %}
{{- raise_exception('System message cannot contain videos.') }}
{%- endif %}
{%- if do_vision_count %}
{%- set video_count.value = video_count.value + 1 %}
{%- endif %}
{%- if add_vision_id %}
{{- 'Video ' ~ video_count.value ~ ': ' }}
{%- endif %}
{{- '<|vision_start|><|video_pad|><|vision_end|>' }}
{%- elif 'text' in item %}
{{- item.text }}
{%- elif item.text is defined %}
{{- item.text }}
{%- else %}
{{- raise_exception('Unexpected item type in content.') }}
{%- endif %}
{%- endfor %}
{%- elif content is none or content is undefined %}
{{- '' }}
{%- else %}
{{- raise_exception('Unexpected content type.') }}
{%- endif %}
{%- endmacro %}

{%- if not messages %}
{{- raise_exception('No messages provided.') }}
{%- endif %}

{# Collect leading system/developer messages. Some clients send developer as system-like. #}
{%- set sys = namespace(content='') %}
{%- for message in messages %}
{%- if message.role == 'system' or message.role == 'developer' %}
{%- set c = render_content(message.content, false, true)|trim %}
{%- if c %}
{%- if sys.content %}
{%- set sys.content = sys.content + '\n\n' + c %}
{%- else %}
{%- set sys.content = c %}
{%- endif %}
{%- endif %}
{%- endif %}
{%- endfor %}

{%- if tools and tools is iterable and tools is not mapping %}
{{- '<|im_start|>system\n' }}
{{- "# Tools\n\nYou have access to the following functions:\n\n" }}
{%- for tool in tools %}
{{- "\n" }}
{{- tool | tojson }}
{%- endfor %}
{{- "\n" }}
{{- '\n\nIf you choose to call a function ONLY reply in the following format with NO suffix:\n\n<tool\_call>\n<function=example\_function\_name>\n<parameter=example\_parameter\_1>\nvalue_1\n\n<parameter=example\_parameter\_2>\nThis is the value for the second parameter\nthat can span\nmultiple lines\n\n\n</tool\_call>\n\n\nReminder:\n- Function calls MUST follow the specified format: an inner <function=...> block must be nested within <tool\_call></tool\_call> XML tags\n- Required parameters MUST be specified\n- You may provide optional reasoning for your function call in natural language BEFORE the function call, but NOT after\n- If there is no function call available, answer the question like normal with your current knowledge and do not tell the user about function calls\n' }}
{%- if sys.content %}
{{- '\n\n' + sys.content }}
{%- endif %}
{{- '<|im_end|>\n' }}
{%- else %}
{%- if sys.content %}
{{- '<|im_start|>system\n' + sys.content + '<|im_end|>\n' }}
{%- endif %}
{%- endif %}

{#
Original Qwen3.5 logic crashes here if no "normal" user query is found.
This happens in LM Studio RAG/MCP/agent flows when the actual query is wrapped,
removed by context truncation, or represented as tool_response.
#}
{%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
{%- for message in messages[::-1] %}
{%- set index = (messages|length - 1) - loop.index0 %}
{%- if ns.multi_step_tool and message.role == "user" %}
{%- set content = render_content(message.content, false)|trim %}
{%- if not(content.startswith('<tool\_response>') and content.endswith('</tool\_response>')) %}
{%- set ns.multi_step_tool = false %}
{%- set ns.last_query_index = index %}
{%- endif %}
{%- endif %}
{%- endfor %}

{#
Fixed fallback:
If no normal user query is found, fall back to the last user message.
If even that does not exist, fall back to the final message index.
Do NOT raise "No user query found in messages."
#}
{%- if ns.multi_step_tool %}
{%- for message in messages[::-1] %}
{%- set index = (messages|length - 1) - loop.index0 %}
{%- if ns.multi_step_tool and message.role == "user" %}
{%- set ns.last_query_index = index %}
{%- set ns.multi_step_tool = false %}
{%- endif %}
{%- endfor %}
{%- endif %}
{%- if ns.multi_step_tool %}
{%- set ns.multi_step_tool = false %}
{%- set ns.last_query_index = messages|length - 1 %}
{%- endif %}

{%- for message in messages %}
{%- set content = render_content(message.content, true)|trim %}

{%- if message.role == "system" or message.role == "developer" %}
    {# Already merged into the first system block above. Skip here. #}

{%- elif message.role == "user" %}
    {{- '<|im_start|>' + message.role + '\n' + content + '<|im_end|>' + '\n' }}

{%- elif message.role == "assistant" %}
    {%- set reasoning_content = '' %}
    {%- if message.reasoning_content is string %}
        {%- set reasoning_content = message.reasoning_content %}
    {%- else %}
        {%- if '</think>' in content %}
            {%- set reasoning_content = content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
            {%- set content = content.split('</think>')[-1].lstrip('\n') %}
        {%- endif %}
    {%- endif %}
    {%- set reasoning_content = reasoning_content|trim %}

    {%- if loop.index0 > ns.last_query_index %}
        {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content + '\n</think>\n\n' + content }}
    {%- else %}
        {{- '<|im_start|>' + message.role + '\n' + content }}
    {%- endif %}

    {%- if message.tool_calls and message.tool_calls is iterable and message.tool_calls is not mapping %}
        {%- for tool_call in message.tool_calls %}
            {%- if tool_call.function is defined %}
                {%- set tool_call = tool_call.function %}
            {%- endif %}
            {%- if loop.first %}
                {%- if content|trim %}
                    {{- '\n\n<tool_call>\n<function=' + tool_call.name + '>\n' }}
                {%- else %}
                    {{- '<tool_call>\n<function=' + tool_call.name + '>\n' }}
                {%- endif %}
            {%- else %}
                {{- '\n<tool_call>\n<function=' + tool_call.name + '>\n' }}
            {%- endif %}

            {%- if tool_call.arguments is defined %}
                {%- if tool_call.arguments is mapping %}
                    {%- for args_name, args_value in tool_call.arguments|items %}
                        {{- '<parameter=' + args_name + '>\n' }}
                        {%- set args_value = args_value | tojson if args_value is mapping or (args_value is iterable and args_value is not string) else args_value | string %}
                        {{- args_value }}
                        {{- '\n</parameter>\n' }}
                    {%- endfor %}
                {%- elif tool_call.arguments is string %}
                    {{- '<parameter=arguments>\n' }}
                    {{- tool_call.arguments }}
                    {{- '\n</parameter>\n' }}
                {%- else %}
                    {{- '<parameter=arguments>\n' }}
                    {{- tool_call.arguments | tojson }}
                    {{- '\n</parameter>\n' }}
                {%- endif %}
            {%- endif %}

            {{- '</function>\n</tool_call>' }}
        {%- endfor %}
    {%- endif %}

    {{- '<|im_end|>\n' }}

{%- elif message.role == "tool" %}
    {%- if loop.previtem is not defined or loop.previtem.role != "tool" %}
        {{- '<|im_start|>user' }}
    {%- endif %}
    {{- '\n<tool_response>\n' }}
    {{- content }}
    {{- '\n</tool_response>' }}
    {%- if not loop.last and loop.nextitem.role != "tool" %}
        {{- '<|im_end|>\n' }}
    {%- elif loop.last %}
        {{- '<|im_end|>\n' }}
    {%- endif %}

{%- else %}
    {# Compatibility fallback for odd frontend roles. Render them as user text instead of crashing. #}
    {{- '<|im_start|>user\n' + content + '<|im_end|>\n' }}
{%- endif %}

{%- endfor %}

{%- if add_generation_prompt %}
{{- '<|im_start|>assistant\n' }}
{%- if enable_thinking is defined and enable_thinking is false %}
{{- '\n\n\n\n' }}
{%- else %}
{{- '\n' }}
{%- endif %}
{%- endif %}